auth.c in LibVNCServer 0.7.1 allows remote attackers to bypass authentication via a…
Priority MEDIUM 40Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Partial · Partial · Partial
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
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.
Why it matters now
EPSS 0.04363 91st percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:libvncserver:libvncserver:0.7.1:*:*:*:*:*:*:* | 0.7.1 | Vulnerable | Libvncserver |
- cpe:2.3:a:libvncserver:libvncserver:0.7.1:*:*:*:*:*:*:* Versions 0.7.1 Vulnerable ·Libvncserver
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2006-2450
- 2026-10-03 Alias added: GHSA-ghjj-rq7v-wjhm
References
Patch 3
More Libvncserver vulnerabilities
- TI-2014-04997 Integer overflow in the MallocFrameBuffer function in vncviewer.c in LibVNCServer 0.9.9… CVSS 2.0HIGH 7.5
- TI-2014-04998 The HandleRFBServerMessage function in libvncclient/rfbproto.c in LibVNCServer 0.9.9 and… CVSS 2.0HIGH 7.5
- TI-2014-05001 Multiple stack-based buffer overflows in the File Transfer feature in rfbserver.c in… CVSS 2.0MEDIUM 6.5
- TI-2014-04999 The rfbProcessClientNormalMessage function in libvncserver/rfbserver.c in LibVNCServer… CVSS 2.0MEDIUM 5.0
- TI-2014-05000 The rfbProcessClientNormalMessage function in libvncserver/rfbserver.c in LibVNCServer… CVSS 2.0MEDIUM 4.3
Sources
- CVE-2006-2450 · CVE Program
- CVE-2006-2450 · NVD
- FIRST EPSS
- GHSA-ghjj-rq7v-wjhm · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences