Description
TigerVNC version prior to 1.10.1 is vulnerable to heap buffer overflow, which could be triggered from DecodeManager::decodeRect. Vulnerability occurs due to the signdness error in processing MemOutStream. Exploitation of this vulnerability could potentially result into remote code execution. This attack appear to be exploitable via network connectivity.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Kaspersky | TigerVNC | 1.10.0 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | tigervnc | 1.10.1+dfsg-1 | — |
| Debian 13 | tigervnc | 1.10.1+dfsg-1 | — |
| Debian 12 | tigervnc | 1.10.1+dfsg-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 18.04 LTS | tigervnc | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | tigervnc +6 | 1.9.0-14.el8_1 | RHSA-2020:1497 |
| RHEL 7 | tigervnc +6 | 1.8.0-21.el7 | RHSA-2020:3875 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP1 | tigervnc | 1.9.0-19.3.1 | SUSE-SU-2020:0113-1 |
| SLES 15 | tigervnc | 1.8.0-13.11.1 | SUSE-SU-2020:0112-1 |
| SLES 12 SP5 | tigervnc | 1.6.0-22.14.1 | SUSE-SU-2020:1749-1 |
| SLES 12 SP4 | tigervnc | 1.6.0-22.14.1 | SUSE-SU-2020:1749-1 |
| SLES 12 SP3 | tigervnc | 1.6.0-18.28.1 | SUSE-SU-2020:0159-1 |
Show 12 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP2 | tigervnc | 1.6.0-18.28.1 | SUSE-SU-2020:0159-1 |
| SLES 12 SP1 | tigervnc | 1.4.3-25.11.1 | SUSE-SU-2020:0266-1 |
| SLES for SAP 12 SP5 | tigervnc | 1.6.0-22.14.1 | SUSE-SU-2020:1749-1 |
| SLES for SAP 12 SP4 | tigervnc | 1.6.0-22.14.1 | SUSE-SU-2020:1749-1 |
| SLES for SAP 12 SP3 | tigervnc | 1.6.0-18.28.1 | SUSE-SU-2020:0159-1 |
| SLES for SAP 12 SP2 | tigervnc | 1.6.0-18.28.1 | SUSE-SU-2020:0159-1 |
| SLES for SAP 12 SP1 | tigervnc | 1.4.3-25.11.1 | SUSE-SU-2020:0266-1 |
| SUSE OpenStack Cloud Crowbar 8 | tigervnc | 1.6.0-18.28.1 | SUSE-SU-2020:0159-1 |
| SUSE OpenStack Cloud 8 | tigervnc | 1.6.0-18.28.1 | SUSE-SU-2020:0159-1 |
| SUSE OpenStack Cloud 7 | tigervnc | 1.6.0-18.28.1 | SUSE-SU-2020:0159-1 |
| SUSE HPE Helion OpenStack 8 | tigervnc | 1.6.0-18.28.1 | SUSE-SU-2020:0159-1 |
| SUSE Enterprise Storage 5 | tigervnc | 1.6.0-18.28.1 | SUSE-SU-2020:0159-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | tigervnc | 1.10.1-17.1 | openSUSE-SU-2024:10591-1 |
| openSUSE Leap 15.1 | tigervnc | 1.9.0-lp151.4.3.1 | openSUSE-SU-2020:0087-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | tigervnc +6 | 1.8.0-21.amzn2 | ALAS2-2020-1552 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | tigervnc +6 | 1.9.0-14.el8_1 | ELSA-2020-1497 |
| Oracle Linux 7 | tigervnc +6 | 1.8.0-21.el7 | ELSA-2020-3875 |
Advisories 13
- RHSA-2020:3875 Red Hat Security Advisory: tigervnc security and bug fix update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- SUSE-SU-2020:0266-1 Security update for tigervnc SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:0159-1 Security update for tigervnc SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2020:0087-1 Security update for tigervnc SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:10591-1 libXvnc-devel-1.10.1-17.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:0113-1 Security update for tigervnc SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:0112-1 Security update for tigervnc SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:1749-1 Security update for tigervnc SUSE / openSUSE Security Updates · Feb 4, 2026
- RHSA-2020:1497 Red Hat Security Advisory: tigervnc security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- WID-SEC-2024-1535 tigervnc: Mehrere Schwachstellen ermöglichen Ausführen von beliebigem Programmcode mit Benutzerrechten BSI CERT-Bund (WID) · Jul 4, 2024
- ALAS2-2020-1552 Low: tigervnc security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Oct 22, 2020
- ELSA-2020-3875 Moderate: tigervnc security and bug fix update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Oct 6, 2020
- ELSA-2020-1497 Moderate: tigervnc security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Apr 18, 2020