auth.c in LibVNCServer 0.7.1 allows remote attackers to bypass authentication via a request in which the client specifies an insecure security type such as "Type 1 - None", which is accepted even if it is not offered by the server, a different issue than CVE-2006-2369
Published Jul 14, 2006
7.5
HIGHCVSS 2.0
EPSS 4.36%
Description
auth.c in LibVNCServer 0.7.1 allows remote attackers to bypass authentication via a request in which the client specifies an insecure security type such as "Type 1 - None", which is accepted even if it is not offered by the server, a different issue than CVE-2006-2369.
Affected products
No data.
- 0.7.1
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
Red Hat statement
Not vulnerable. This issue does not affect the versions of LibVNCServer as distributed with Red Hat Enterprise Linux 2.1, 3, or 4.
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 2, 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 (20 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 4.36% (0.04363) | 90.96th | v5 (v2026.06.15) |
| Jun 15, 2026 | 4.28% (0.04283) | 89.80th | v5 (v2026.06.15) |
| Aug 7, 2025 | 3.22% (0.03222) | 86.56th | v4 (v2025.03.14) |
| Mar 30, 2025 | 1.85% (0.01850) | 81.40th | v4 (v2025.03.14) |
| Mar 29, 2025 | 2.86% (0.02862) | 77.09th | v4 (v2025.03.14) |
| Mar 19, 2025 | 1.85% (0.01850) | 81.09th | v4 (v2025.03.14) |
| Mar 17, 2025 | 3.54% (0.03542) | 86.89th | v4 (v2025.03.14) |
| Dec 12, 2024 | 1.27% (0.01274) | 86.28th | v3 (v2023.03.01) |
| Nov 2, 2024 | 1.27% (0.01274) | 86.12th | v3 (v2023.03.01) |
| Jun 3, 2024 | 4.98% (0.04976) | 92.82th | v3 (v2023.03.01) |
| Jan 24, 2024 | 4.93% (0.04926) | 92.06th | v3 (v2023.03.01) |
| Oct 18, 2023 | 5.26% (0.05260) | 92.16th | v3 (v2023.03.01) |
| Aug 2, 2023 | 6.76% (0.06758) | 92.91th | v3 (v2023.03.01) |
| Jun 25, 2023 | 7.03% (0.07026) | 92.98th | v3 (v2023.03.01) |
| May 18, 2023 | 1.24% (0.01237) | 83.43th | v3 (v2023.03.01) |
| Apr 10, 2023 | 0.98% (0.00980) | 81.16th | v3 (v2023.03.01) |
| Mar 7, 2023 | 2.33% (0.02329) | 88.00th | v3 (v2023.03.01) |
| Mar 6, 2023 | 3.78% (0.03779) | 85.48th | v2 (v2022.01.01) |
| Apr 1, 2022 | 3.78% (0.03779) | 84.01th | v2 (v2022.01.01) |
| Feb 4, 2022 | 3.78% (0.03779) | 67.21th | v2 (v2022.01.01) |
No CWE recorded.
References (20)
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=376824 x_refsource_MISCPatch
- http://libvncserver.cvs.sourceforge.net/libvncserver/libvncserver/libvncserver/auth.c?r1=1.11&r2=1.14&diff_format=u x_refsource_CONFIRMPatch
- http://seclists.org/fulldisclosure/2022/May/29 mailing-listx_refsource_FULLDISC
- http://secunia.com/advisories/20940 third-party-advisoryx_refsource_SECUNIAPatchVendor Advisory
- http://secunia.com/advisories/21179 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/21349 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/21393 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/21405 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/24525 third-party-advisoryx_refsource_SECUNIA
- http://security.gentoo.org/glsa/glsa-200608-05.xml vendor-advisoryx_refsource_GENTOO
- http://security.gentoo.org/glsa/glsa-200608-12.xml vendor-advisoryx_refsource_GENTOO
- http://security.gentoo.org/glsa/glsa-200703-19.xml vendor-advisoryx_refsource_GENTOO
- http://sourceforge.net/project/shownotes.php?release_id=431724&group_id=32584 x_refsource_CONFIRMPatch
- http://www.novell.com/linux/security/advisories/2006_42_kernel.html vendor-advisoryx_refsource_SUSE
- http://www.securityfocus.com/archive/1/442986/100/0/threaded mailing-listx_refsource_BUGTRAQ
- http://www.securityfocus.com/bid/18977 vdb-entryx_refsource_BID
- http://www.vupen.com/english/advisories/2006/2797 vdb-entryx_refsource_VUPEN
- https://access.redhat.com/security/cve/CVE-2006-2450 Vendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2006-2450
- https://www.cve.org/CVERecord?id=CVE-2006-2450
Change history (0)
No recorded changes yet.