Vulnerability · Published Sep 2, 2022 · Assigned by mitre
CVE-2020-29260
High 7.5
In plain English
A high-severity security flaw in the libvncserver package (Alpine). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.1% (higher than 67% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)7.5High
Exploit odds (30 days)1.1%top 33.4% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
libvncclient v0.9.13 was discovered to contain a memory leak via the function rfbClientCleanup().
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | libvncserver | 0.9.13-r5 | ALPINE-CVE-2020-29260 |
| Alpine:v3.21 | libvncserver | 0.9.13-r5 | ALPINE-CVE-2020-29260 |
| Alpine:v3.22 | libvncserver | 0.9.13-r5 | ALPINE-CVE-2020-29260 |
| Alpine:v3.23 | libvncserver | 0.9.13-r5 | ALPINE-CVE-2020-29260 |
| Alpine:v3.24 | libvncserver | 0.9.13-r5 | ALPINE-CVE-2020-29260 |
| Debian:12 | libvncserver | 0.9.13+dfsg-5 | DEBIAN-CVE-2020-29260 |
| Debian:13 | libvncserver | 0.9.13+dfsg-5 | DEBIAN-CVE-2020-29260 |
| Debian:14 | libvncserver | 0.9.13+dfsg-5 | DEBIAN-CVE-2020-29260 |
| Ubuntu:22.04:LTS | libvncserver | 0.9.13+dfsg-3ubuntu0.1 | USN-8463-1 |
| Ubuntu:22.04:LTS | libvncserver | 0.9.13+dfsg-3ubuntu0.1 | UBUNTU-CVE-2020-29260 |
| Ubuntu:24.04:LTS | libvncserver | 0.9.14+dfsg-1ubuntu0.1 | USN-8463-1 |
| Ubuntu:25.10 | libvncserver | 0.9.15+dfsg-1ubuntu0.1 | USN-8463-1 |
| Ubuntu:26.04:LTS | libvncserver | 0.9.15+dfsg-3ubuntu0.1 | USN-8463-1 |
| Ubuntu:22.04:LTS | tightvnc | no fix listed | UBUNTU-CVE-2020-29260 |
| Ubuntu:24.04:LTS | tightvnc | no fix listed | UBUNTU-CVE-2020-29260 |
| Ubuntu:25.10 | tightvnc | no fix listed | UBUNTU-CVE-2020-29260 |
| Ubuntu:26.04:LTS | tightvnc | no fix listed | UBUNTU-CVE-2020-29260 |
| Ubuntu:26.10 | tightvnc | no fix listed | UBUNTU-CVE-2020-29260 |
| Ubuntu:22.04:LTS | veyon | no fix listed | UBUNTU-CVE-2020-29260 |
| Ubuntu:24.04:LTS | veyon | no fix listed | UBUNTU-CVE-2020-29260 |
| Ubuntu:25.10 | veyon | no fix listed | UBUNTU-CVE-2020-29260 |
| Ubuntu:26.04:LTS | veyon | no fix listed | UBUNTU-CVE-2020-29260 |
| Ubuntu:26.10 | veyon | no fix listed | UBUNTU-CVE-2020-29260 |
| Ubuntu:22.04:LTS | x11vnc | no fix listed | UBUNTU-CVE-2020-29260 |
| Ubuntu:24.04:LTS | x11vnc | no fix listed | UBUNTU-CVE-2020-29260 |
| Ubuntu:25.10 | x11vnc | no fix listed | UBUNTU-CVE-2020-29260 |
| Ubuntu:26.04:LTS | x11vnc | no fix listed | UBUNTU-CVE-2020-29260 |
| Ubuntu:26.10 | x11vnc | no fix listed | UBUNTU-CVE-2020-29260 |
Affected products (as reported)
References
- https://github.com/LibVNC/libvncserver/commit/bef41f6ec4097a8ee094f90a1b34a708fbd757ec x_refsource_MISC
- [debian-lts-announce] 20220929 [SECURITY] [DLA 3125-1] libvncserver security update mailing-list, x_refsource_MLIST