security flaw
Published Sep 1, 2004
7.5
HIGHCVSS 2.0
EPSS 2.40%
Description
TightVNC before 1.2.6 generates the same challenge string for multiple connections, which allows remote attackers to bypass VNC authentication by sniffing the challenge and response of other users.
Affected products
No data.
No data.
Red Hat Enterprise Linux AS (Advanced Server) version 2.1
n/a
Fixed · RHSA-2002:287
Red Hat Linux 7.0
n/a
Fixed · RHSA-2003:041
Red Hat Linux 7.1
n/a
Fixed · RHSA-2003:041
Red Hat Linux 7.2
n/a
Fixed · RHSA-2003:041
Red Hat Linux 7.3
n/a
Fixed · RHSA-2003:041
Red Hat Linux 8.0
n/a
Fixed · RHSA-2003:041
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux AS (Advanced Server) version 2.1 | n/a | Fixed | RHSA-2002:287 |
| Red Hat Linux 7.0 | n/a | Fixed | RHSA-2003:041 |
| Red Hat Linux 7.1 | n/a | Fixed | RHSA-2003:041 |
| Red Hat Linux 7.2 | n/a | Fixed | RHSA-2003:041 |
| Red Hat Linux 7.3 | n/a | Fixed | RHSA-2003:041 |
| Red Hat Linux 8.0 | n/a | Fixed | RHSA-2003:041 |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:P/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.40% (0.02404) | 83.46th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.40% (0.02404) | 81.85th | v5 (v2026.06.15) |
| Mar 17, 2025 | 1.30% (0.01298) | 78.33th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.46% (0.00461) | 76.19th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.46% (0.00461) | 74.64th | v3 (v2023.03.01) |
| Aug 9, 2023 | 0.46% (0.00461) | 72.16th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.92% (0.00918) | 80.44th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.97% (0.01974) | 78.97th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.97% (0.01974) | 77.12th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.97% (0.01974) | 56.20th | v2 (v2022.01.01) |
No CWE recorded.
References (13)
- http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000640 vendor-advisoryx_refsource_CONECTIVA
- http://marc.info/?l=bugtraq&m=102753170201524&w=2 mailing-listx_refsource_BUGTRAQ
- http://marc.info/?l=bugtraq&m=102769183913594&w=2 mailing-listx_refsource_BUGTRAQ
- http://www.mandrakesoft.com/security/advisories?name=MDKSA-2003:022 vendor-advisoryx_refsource_MANDRAKE
- http://www.redhat.com/support/errata/RHSA-2002-287.html vendor-advisoryx_refsource_REDHAT
- http://www.redhat.com/support/errata/RHSA-2003-041.html vendor-advisoryx_refsource_REDHAT
- http://www.securityfocus.com/bid/5296 vdb-entryx_refsource_BID
- http://www.tightvnc.com/WhatsNew.txt x_refsource_CONFIRM
- https://access.redhat.com/security/cve/CVE-2002-1336 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1616876 Issue Tracking
- https://exchange.xforce.ibmcloud.com/vulnerabilities/5992 vdb-entryx_refsource_XF
- https://nvd.nist.gov/vuln/detail/CVE-2002-1336
- https://www.cve.org/CVERecord?id=CVE-2002-1336
| Link | Providers | Tags |
|---|---|---|
| http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000640 | vendor-advisoryx_refsource_CONECTIVA | |
| http://marc.info/?l=bugtraq&m=102753170201524&w=2 | mailing-listx_refsource_BUGTRAQ | |
| http://marc.info/?l=bugtraq&m=102769183913594&w=2 | mailing-listx_refsource_BUGTRAQ | |
| http://www.mandrakesoft.com/security/advisories?name=MDKSA-2003:022 | vendor-advisoryx_refsource_MANDRAKE | |
| http://www.redhat.com/support/errata/RHSA-2002-287.html | vendor-advisoryx_refsource_REDHAT | |
| http://www.redhat.com/support/errata/RHSA-2003-041.html | vendor-advisoryx_refsource_REDHAT | |
| http://www.securityfocus.com/bid/5296 | vdb-entryx_refsource_BID | |
| http://www.tightvnc.com/WhatsNew.txt | x_refsource_CONFIRM | |
| https://access.redhat.com/security/cve/CVE-2002-1336 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1616876 | Issue Tracking | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/5992 | vdb-entryx_refsource_XF | |
| https://nvd.nist.gov/vuln/detail/CVE-2002-1336 | ||
| https://www.cve.org/CVERecord?id=CVE-2002-1336 |
Change history (0)
No recorded changes yet.