# TigerVNC vulnerabilities

Source: https://junglewise.ai/threats/technologies/tigervnc  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 10 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/tigervnc.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 5 vulnerabilities in TigerVNC: 0 in the last 7 days and 0 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-34000, was published on 5 May 2026.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 0
- All time: 5 (0 critical, 0 exploited in the wild)

## About TigerVNC

TigerVNC is an open-source remote desktop software using the VNC protocol.

## Latest TigerVNC vulnerabilities

- [CVE-2026-34000: X.Org X server out-of-bounds read in XKB geometry processing](https://junglewise.ai/threats/cve-2026-34000-x-org-x-server-out-of-bounds-read-in-xkb-geometry-processing) (medium, CVSS 6.1, published 5 May 2026)
- [CVE-2026-34003: X.Org X server out-of-bounds memory access in XKB request validation](https://junglewise.ai/threats/cve-2026-34003-x-org-x-server-out-of-bounds-memory-access-in-xkb-request) (high, CVSS 7.8, published 23 Apr 2026)
- [CVE-2026-34001: X.Org X server use-after-free in miSyncTriggerFence](https://junglewise.ai/threats/cve-2026-34001-x-org-x-server-use-after-free-in-misynctriggerfence) (high, CVSS 7.8, published 23 Apr 2026)
- [CVE-2026-33999: X.Org X server integer underflow in XKB compatibility map handling](https://junglewise.ai/threats/cve-2026-33999-x-org-x-server-integer-underflow-in-xkb-compatibility-map) (high, CVSS 7.8, published 23 Apr 2026)
- [CVE-2026-34352: TigerVNC x0vncserver incorrect permissions in shared memory image](https://junglewise.ai/threats/cve-2026-34352-tigervnc-x0vncserver-incorrect-permissions-in-shared-memory-image) (high, CVSS 8.5, published 26 Mar 2026)

## Most severe TigerVNC vulnerabilities

- [CVE-2026-34352: TigerVNC x0vncserver incorrect permissions in shared memory image](https://junglewise.ai/threats/cve-2026-34352-tigervnc-x0vncserver-incorrect-permissions-in-shared-memory-image) (high, CVSS 8.5, published 26 Mar 2026)
- [CVE-2026-34003: X.Org X server out-of-bounds memory access in XKB request validation](https://junglewise.ai/threats/cve-2026-34003-x-org-x-server-out-of-bounds-memory-access-in-xkb-request) (high, CVSS 7.8, published 23 Apr 2026)
- [CVE-2026-34001: X.Org X server use-after-free in miSyncTriggerFence](https://junglewise.ai/threats/cve-2026-34001-x-org-x-server-use-after-free-in-misynctriggerfence) (high, CVSS 7.8, published 23 Apr 2026)
- [CVE-2026-33999: X.Org X server integer underflow in XKB compatibility map handling](https://junglewise.ai/threats/cve-2026-33999-x-org-x-server-integer-underflow-in-xkb-compatibility-map) (high, CVSS 7.8, published 23 Apr 2026)
- [CVE-2026-34000: X.Org X server out-of-bounds read in XKB geometry processing](https://junglewise.ai/threats/cve-2026-34000-x-org-x-server-out-of-bounds-read-in-xkb-geometry-processing) (medium, CVSS 6.1, published 5 May 2026)

## Vulnerabilities per week

Nothing was published in the last eight weeks.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "TigerVNC vulnerabilities", https://junglewise.ai/threats/technologies/tigervnc, 10 November 2026.