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CVE-2011-1775
The CSecurityTLS::processMsg function in common/rfb/CSecurityTLS.cxx in the vncviewer component in TigerVNC 1.1beta1 does not properly…
Medium5.8EPSS 1.3%
- Published
- Updated
- Reserved
- Assigned by
- redhat
Description
The CSecurityTLS::processMsg function in common/rfb/CSecurityTLS.cxx in the vncviewer component in TigerVNC 1.1beta1 does not properly verify the server's X.509 certificate, which allows man-in-the-middle attackers to spoof a TLS VNC server via an arbitrary certificate.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium5.8 | AV:N/AC:M/Au:N/C:P/I:P/A:N |
- EPSS (exploitation in 30 days)
- 1.3% · top 30% of all CVEs (2 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.8.
Weakness
Affected products
n/a
- affected n/a
References (11)
- [oss-security] 20110506 CVE request: tigervnc (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [oss-security] 20110509 Re: CVE request: tigervnc (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [tigervnc-devel] 20110504 potential vulnerability in TLS secType? (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [tigervnc-devel] 20110504 Re: potential vulnerability in TLS secType? (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- https://bugzilla.redhat.com/show_bug.cgi?id=702672 (opens in a new tab)x_refsource_CONFIRMx_transferred
- FEDORA-2011-6838 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- https://bugzilla.redhat.com/show_bug.cgi?id=702470 (opens in a new tab)x_refsource_CONFIRMx_transferred
- RHSA-2011:0871 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- 44939 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 47738 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- [tigervnc-devel] 20110505 Re: potential vulnerability in TLS secType? (opens in a new tab)mailing-listx_refsource_MLISTx_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)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Record last updated .