THE SECURITIES  REPRESENTED BY THIS CERTIFICATE (THE "SECURITIES") HAVE NOT BEEN
REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE  "SECURITIES  ACT")
OR STATE SECURITIES LAWS AND MAY NOT BE SOLD, TRANSFERRED,  ASSIGNED, PLEDGED OR
HYPOTHECATED OR OTHERWISE DISPOSED OF UNLESS REGISTERED UNDER THE SECURITIES ACT
AND  UNDER  APPLICABLE  STATE  SECURITIES  LAWS OR  XYBERNAUT  CORPORATION  (THE
"COMPANY")  SHALL  HAVE  RECEIVED  AN  OPINION  IN  FORM,  SCOPE  AND  SUBSTANCE
REASONABLY  ACCEPTABLE TO THE COMPANY, OF COUNSEL, WHO IS REASONABLY  ACCEPTABLE
TO THE COMPANY THAT REGISTRATION OF SUCH SECURITIES UNDER THE SECURITIES ACT AND
UNDER THE  PROVISIONS OF  APPLICABLE  FEDERAL AND STATE  SECURITIES  LAWS IS NOT
REQUIRED.


                          COMMON STOCK PURCHASE WARRANT


                              XYBERNAUT CORPORATION


                            Expires November 19, 2005


No.:  W-____                                          Number of Shares: ________
Date of Issuance:  November 19, 2001


         1. Issuance. In consideration of good and valuable  consideration,  the
receipt of which is hereby  acknowledged  by Xybernaut  Corporation,  a Delaware
corporation  (the  "Company"),  ______________,  or its registered  assigns (the
"Holder")  is hereby  granted the right to purchase at any time until 5:00 P.M.,
New York City time, on November 19, 2005 (the "Expiration Date"),  _____________
(____)  fully  paid and  nonassessable  shares  (the  "Warrant  Shares")  of the
Company's  Common Stock,  par value $.01 per share (the "Common  Stock"),  at an
exercise  price (the  "Exercise  Price") per share equal to $2.55.  The Exercise
Price and the number of shares for which the  Warrant  is  exercisable  shall be
subject to  adjustment  as  provided  herein.  This  Warrant is being  issued in
connection  with the Common  Stock and Warrant  Purchase  Agreement  dated as of
November 15, 2001 (the "Agreement"), and is subject to its terms and conditions.
In the  event  of any  conflict  between  the  terms  of  this  Warrant  and the
Agreement, the Agreement shall control.

         2.  Exercise  of  Warrants.  Except  as  provided  in  Section 4 below,
exercise of the purchase  rights  represented by this Warrant may be made at any
time or times,  before the close of business  on the  Expiration  Date,  or such
earlier date on which this Warrant may terminate as provided in this Warrant, by
the  surrender  of this Warrant and the Notice of Exercise  Form annexed  hereto
duly  executed,  at the office of the Company (or such other office or agency of
the Company as it may  designate by notice in writing to the  registered  holder
hereof at the address of such holder  appearing on the books of the Company) and
upon payment of an amount of  consideration  therefor  payable by (i)  certified
check or cashier's  check or by wire  transfer to an account  designated  by the
Company in an amount equal to the  Exercise  Price  multiplied  by the number of
Warrant Shares purchased,  (ii) if the




Registration  Statement  (as  defined in the  Agreement)  has not been  declared
effective by November 19, 2002, by "cashless  exercise",  by  surrendering  this
Warrant certificate to the Company to receive a number of shares of Common Stock
equal to (A) the number of Warrant  Shares  with  respect to which the Holder is
exercising this Warrant minus (B) the number of Warrant Shares which is equal to
the quotient  obtained by dividing (x) the product of the Exercise Price and the
number of Warrant  Shares being  purchased upon such exercise by (y) the closing
bid  price  of the  Common  Stock  on the  date of such  exercise  or (iii) by a
combination  of the  foregoing  methods.  In any case  where  the  consideration
payable  upon such  exercise  is being paid in whole or in part  pursuant to the
provisions of clause (ii),  such exercise shall be accompanied by written notice
from the Holder of this  Warrant  specifying  the manner of payment  thereof and
containing a calculation  (in accordance with  clause(ii)(B)  of this Section 2)
showing  the number of Warrant  Shares  with  respect to which  rights are being
surrendered  thereunder (the "Surrendered  Shares") and the net number of shares
of Common Stock to be issued after giving effect to such surrender.  The Company
shall cancel this Warrant with respect to any Surrendered  Shares.  In the event
of an exercise of this  Warrant in  accordance  with this  Section 2, the Holder
shall be  entitled to receive a  certificate  for the number of shares of Common
Stock  so  purchased.  Certificates  for  shares  purchased  hereunder  shall be
delivered to the Holder  hereof within three (3) business days after the date on
which this Warrant shall have been exercised as aforesaid.

         3.  Reservation  of Shares.  The Company  hereby  covenants that at all
times  during the term of this  Warrant  there  shall be  reserved a  sufficient
number of shares of its Common  Stock as shall be  required  for  issuance  upon
exercise of this Warrant (the "Warrant Shares").

         4. No  Fractional  Shares  or  Scrip.  No  fractional  shares  or scrip
representing  fractional  shares  shall  be  issued  upon the  exercise  of this
Warrant.

         5. Loss, Theft,  Destruction or Mutilation of Warrant.  Upon receipt by
the Company of evidence  satisfactory to it of the loss,  theft,  destruction or
mutilation  of this  Warrant,  and (in the case of loss,  theft or  destruction)
receipt  of  reasonably  satisfactory  indemnification,  and  (in  the  case  of
mutilation)  upon surrender and  cancellation of this Warrant,  the Company will
execute  and  deliver a new  Warrant  of like  tenor and date and any such lost,
stolen, destroyed or mutilated Warrant shall thereupon become void.

         6. Rights of the Holder.  The Holder  shall not, by virtue  hereof,  be
entitled to any rights of a stockholder in the Company, either at law or equity,
and the rights of the Holder are limited to those  expressed in this Warrant and
are not enforceable against the Company except to the extent set forth herein.

         7.  Adjustments  of Exercise  Price and Number of Warrant  Shares.  The
number and kind of securities  purchasable upon the exercise of this Warrant and
the  Exercise  Price shall be subject to  adjustment  from time to time upon the
happening of any of the following.

         In case the  Company  shall (i)  declare or pay a dividend in shares of
Common Stock or make a distribution  in shares of Common Stock to holders of its
outstanding Common Stock, (ii) subdivide its outstanding shares of Common Stock,
(iii) combine its  outstanding  shares of Common Stock into a smaller  number of
shares  of Common  Stock or (iv)  issue any  shares  of its  capital  stock in a
reclassification  of the  Common  Stock,  then  the  number  of  Warrant  Shares
purchasable  upon  exercise of this Warrant  immediately  prior thereto shall be
adjusted so that the Holder  shall be entitled to receive the kind and number of
Warrant  Shares or other  securities of the Company which he would have owned or
have been  entitled  to  receive  had such  Warrant  been  exercised  in advance
thereof.

                                       2


Upon each such  adjustment  of the kind and  number of  Warrant  Shares or other
securities  of the Company  which are  purchasable  hereunder,  the Holder shall
thereafter  be  entitled  to  purchase  the  number of  Warrant  Shares or other
securities  resulting from such adjustment at an Exercise Price per such Warrant
Share or other  security  obtained by  multiplying  the Exercise Price in effect
immediately prior to such adjustment by the number of Warrant Shares purchasable
pursuant hereto  immediately prior to such adjustment and dividing by the number
of  Warrant  Shares  or other  securities  of the  Company  resulting  from such
adjustment.

         An adjustment  made  pursuant to this section 7 shall become  effective
immediately  after the effective  date of such event  retroactive  to the record
date, if any, for such event.

         8. Intentionally Omitted.

         9.  Notice of  Adjustment.  Whenever  the number of  Warrant  Shares or
number or kind of securities or other property  purchasable upon the exercise of
this Warrant or the Exercise Price is adjusted as herein  provided,  the Company
shall promptly mail by registered or certified mail,  return receipt  requested,
to the Holder notice of such adjustment or adjustments  setting forth the number
of Warrant  Shares  (and other  securities  or  property)  purchasable  upon the
exercise of this  Warrant and the  Exercise  Price of such  Warrant  Shares (and
other  securities  or property)  after such  adjustment,  setting  forth a brief
statement  of  the  facts  requiring  such  adjustment  and  setting  forth  the
computation  by which  such  adjustment  was made.  Such  notice,  in absence of
manifest  error,  shall  be  conclusive  evidence  of the  correctness  of  such
adjustment.

         10.  Warrant  Call.  At any  time  or  from  time  to  time  after  the
Registration  Statement  (as defined in Section 11.2  hereof) has been  declared
effective  and after any  lock-up  period  relating  to the  Warrant  Shares has
expired, the Company, at its option, may, upon written notice to the Holder (the
"Call  Notice"),  call up to one hundred  percent  (100%) of this Warrant if the
volume  weighted  average price for the Common Stock (using the  Bloomberg  VWAP
function) is equal to or greater  than $3.25 per share for ten (10)  consecutive
trading days prior to the date the Company  calls the Warrant.  To be effective,
the Call Notice must be given within ten (10) days after the  aforementioned ten
(10) day period. The rights and privileges granted pursuant to this Warrant with
respect to such Warrant  Shares  subject to the Call Notice  shall  terminate if
this Warrant is not exercised  with respect to such Warrant Shares by the Holder
within ten (10) days after the Call Notice is  received  by the  Holder.  In the
event that this  Warrant is not  exercised  by the  Holder  with  respect to the
Warrant  Shares  subject to the Call Notice,  this Warrant  shall expire at 5:00
p.m.  eastern  time on the call date and the  Company  will  remit to the Holder
$0.01 per Warrant Share and a new Warrant certificate representing the number of
Warrant  Shares,  if any,  with  respect  to  which  this  Warrant  has not been
exercised or subject to a Call Notice upon such Holder  tendering to the Company
the expired Warrant certificate.

         11.  Transfer to Comply With the Securities Act;  Registration  Rights.

              11.1 This Warrant has not been registered under the Securities Act
of 1933, as amended (the "Act") and has been issued to the Holder for investment
and not with a view to the  distribution  of either the  Warrant or the  Warrant
Shares. Neither this Warrant nor any of the Warrant Shares or any other security
issued or  issuable  upon  exercise of this  Warrant  may be sold,  transferred,
pledged or  hypothecated in the absence of an effective  registration  statement
under the Act relating to such security or an opinion of counsel satisfactory to
the Company that  registration  is not required under the Act. Each  certificate
for the Warrant,  the Warrant Shares and any other  security  issued or issuable
upon exercise of this Warrant  shall  contain a legend on the face  thereof,  in
form and substance

                                       3


satisfactory  to counsel for the  Company,  setting  forth the  restrictions  on
transfer contained in this Section.

              11.2 The  Company  hereby  agrees to register  the Warrant  Shares
pursuant to a registration  statement to be filed by the Company pursuant to the
Registration  Rights Agreement dated as of November 15, 2001 (the  "Registration
Statement").

         12. Notices.  Any notice or other  communication  required or permitted
hereunder  shall be in writing and shall be delivered  personally,  telegraphed,
telexed,  sent by facsimile  transmission  or sent by  certified,  registered or
express mail,  postage  pre-paid.  Any such notice shall be deemed given when so
delivered personally,  telegraphed,  telexed or sent by facsimile  transmission,
or, if mailed,  two days after the date of deposit in the United  States  mails.
The  addresses  for such  communications  shall be with respect to the Holder of
this Warrant or of Warrant  Shares  issued  pursuant  hereto,  addressed to such
Holder at its last know  address or facsimile  number  appearing on the books of
the  Company  maintained  for such  purposes,  or with  respect to the  Company,
addressed to:

                     Xybernaut Corporation
                     12701 Fair Lakes Circle
                     Suite 550
                     Fairfax, Virginia 22033
                     Facsimile no.: (703) 631-3903
                     Attn: John F. Moynahan

or to such other address or addresses or facsimile number or numbers as any such
party may most recently have  designated in writing to the other party hereto by
notice given in accordance  with this Section.  Copies of notices to the Company
shall be sent to (i) Dr.  Steven A. Newman,  Xybernaut  Corporation,  12701 Fair
Lakes Circle, Suite 550, Fairfax,  Virginia 22033, Facsimile no.: (703) 631-3903
and (ii) Martin Eric Weisberg,  Esq., Jenkens & Gilchrist Parker Chapin LLP, The
Chrysler  Building,  405 Lexington Avenue, 7th Floor, New York, New York, 10174,
Facsimile no.: (212) 704-6288.

         13.  Supplements and Amendments;  Whole Agreement.  This Warrant may be
amended or  supplemented  only by an instrument in writing signed by the parties
hereto. This Warrant of even date herewith contain the full understanding of the
parties  hereto with respect to the subject  matter hereof and thereof and there
are no  representations,  warranties,  agreements or  understandings  other than
expressly contained herein and therein.

         14.  Governing  Law. This Warrant shall be deemed to be a contract made
under the laws of the State of New York and for all  purposes  shall be governed
by and  construed  in  accordance  with the  laws of such  State  applicable  to
contracts to be made and performed entirely within such State.

         15.  Counterparts.  This  Warrant  may be  executed  in any  number  of
counterparts and each of such  counterparts  shall for all purposes be deemed to
be an original,  and all such counterparts shall together constitute but one and
the same instrument.

         16. Descriptive Headings.  Descriptive headings of the several Sections
of this  Warrant  are  inserted  for  convenience  only and shall not control or
affect the meaning or construction of any of the provisions hereof.

                                       4


         IN WITNESS WHEREOF, the parties hereto have executed this Warrant as of
November 19, 2001.



                                           XYBERNAUT CORPORATION


                                           By:________________________
                                              Name: Steven A. Newman
                                              Title: Vice Chairman


                                        5


                          NOTICE OF EXERCISE OF WARRANT


         The  undersigned  hereby  irrevocably  elects to  exercise  the  right,
represented by the Warrant certificate dated as of __________, 2001, to purchase
__________  shares of the Common Stock,  par value $0.01 per share, of Xybernaut
Corporation and tenders herewith payment as follows (check applicable box(es)):

         |_|  by  certified   check,   cashier's   check  or  wire  transfer  of
$______________; and/or

         |_| by the surrender for  cancellation  of such portion of the attached
Warrant as calculated in accordance with Section 2(ii) for the cashless exercise
of the Warrant and set forth below:

          Number of Warrant Shares Surrendered for Cancellation:________________

          Number of Warrant Shares to be Issued:________________________________

         In  exercising  this  Warrant,  the  undersigned  hereby  confirms  and
acknowledges  that the shares of Common Stock are being acquired  solely for the
account of the  undersigned  and not as a nominee for any other  party,  and for
investment, and that the undersigned will not offer sell or otherwise dispose of
any such shares of Common Stock, except under circumstances that will not result
in a violation of the United States  Securities Act of 1933, as amended,  or any
foreign or state securities laws.

         Please issue a certificate or certificates  representing said shares of
Common  Stock  in the  name  of the  undersigned  or in  such  other  name as is
specified below:

                 -------------------------------
                 (Name)

                 -------------------------------
                 (Address)
                 -------------------------------


Dated: ______________


                                              ----------------------------------
                                              Name:


ACKNOWLEDGED BY:

XYBERNAUT CORPORATION

By:_________________________
   Name:
   Title:


By:_________________________
   Name:
   Title:


                                       6