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CVE-2006-2450
auth.c in LibVNCServer 0.7.1 allows remote attackers to bypass authentication via a request in which the client specifies an insecure…
- 7.5HighCVSS base score
- 4.4%Exploitation in 30 daysEPSS · top 8.6% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By redhat
- 57 days later
· 57 days later
Published
- 18 years later
· 18 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | High7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
- EPSS (exploitation in 30 days)
- 4.4% · top 8.6% of all CVEs (11 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Affected products
n/a
- affected n/a
References
17
- SUSE-SA:2006:042 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=376824 (opens in a new tab)x_refsource_MISCx_transferred
- 24525 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- ADV-2006-2797 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- 21349 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- GLSA-200608-05 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
- GLSA-200703-19 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
- http://sourceforge.net/project/shownotes.php?release_id=431724&group_id=32584 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 20940 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 21393 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- GLSA-200608-12 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
- 21405 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 18977 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- http://libvncserver.cvs.sourceforge.net/libvncserver/libvncserver/libvncserver/auth.c?r1=1.11&r2=1.14&diff_format=u (opens in a new tab)x_refsource_CONFIRMx_transferred
- 21179 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 20060811 Re: [ GLSA 200608-12 ] x11vnc: Authentication bypass in included LibVNCServer code (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- 20220513 some details regarding CVE-2022-24422 / iDRAC VNC authentication (opens in a new tab)mailing-listx_refsource_FULLDISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2006-2451 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2006-2450)Record last updated .