tigervnc has 8 CVEs on record. The median CVSS is 7.8 (high). None have a confirmed exploitation report. The dominant weakness classes are CWE-416 (3) and CWE-787 (3).
CVEs per month
Last 12 months, by publish date
- Exploited share
- 0% vs 1% corpus
- Median CVSS
- 7.8
- Publish → KEV
- —
- Last 90 days
- 0 prev 0
Worst active — by depth score
CVE-2025-26601High· 7.8A use-after-free flaw was found in X.Org and Xwayland43CVE-2025-26600High· 7.8A use-after-free flaw was found in X.Org and Xwayland43CVE-2025-26599High· 7.8An access to an uninitialized pointer flaw was found in X.Org and Xwayland43CVE-2025-26598High· 7.8An out-of-bounds write flaw was found in X.Org and Xwayland43CVE-2025-26597High· 7.8A buffer overflow flaw was found in X.Org and Xwayland43
tigervnc vulnerabilities
CVEs affecting tigervnc, newest first. Open any entry for full detail, references, and exploit status.
8 CVEsRSS
CVE-2025-26601High· 7.8A use-after-free flaw was found in X.Org and Xwayland
A use-after-free flaw was found in X.Org and Xwayland. When changing an alarm, the values of the change mask are evaluated one after the other, changing the trigger values as requested, and eventually, SyncInitTrigger() is called. If one…
CVE-2025-26600High· 7.8A use-after-free flaw was found in X.Org and Xwayland
A use-after-free flaw was found in X.Org and Xwayland. When a device is removed while still frozen, the events queued for that device remain while the device is freed. Replaying the events will cause a use-after-free.
CVE-2025-26599High· 7.8An access to an uninitialized pointer flaw was found in X.Org and Xwayland
An access to an uninitialized pointer flaw was found in X.Org and Xwayland. The function compCheckRedirect() may fail if it cannot allocate the backing pixmap. In that case, compRedirectWindow() will return a BadAlloc error without valid…
CVE-2025-26598High· 7.8An out-of-bounds write flaw was found in X.Org and Xwayland
An out-of-bounds write flaw was found in X.Org and Xwayland. The function GetBarrierDevice() searches for the pointer device based on its device ID and returns the matching value, or supposedly NULL, if no match was found. However, the c…
CVE-2025-26597High· 7.8A buffer overflow flaw was found in X.Org and Xwayland
A buffer overflow flaw was found in X.Org and Xwayland. If XkbChangeTypesOfKey() is called with a 0 group, it will resize the key symbols table to 0 but leave the key actions unchanged. If the same function is later called with a non-zer…
CVE-2025-26596High· 7.8A heap overflow flaw was found in X.Org and Xwayland
A heap overflow flaw was found in X.Org and Xwayland. The computation of the length in XkbSizeKeySyms() differs from what is written in XkbWriteKeySyms(), which may lead to a heap-based buffer overflow.
CVE-2025-26595High· 7.8A buffer overflow flaw was found in X.Org and Xwayland
A buffer overflow flaw was found in X.Org and Xwayland. The code in XkbVModMaskText() allocates a fixed-sized buffer on the stack and copies the names of the virtual modifiers to that buffer. The code fails to check the bounds of the buf…
CVE-2025-26594High· 7.8A use-after-free flaw was found in X.Org and Xwayland
A use-after-free flaw was found in X.Org and Xwayland. The root cursor is referenced in the X server as a global variable. If a client frees the root cursor, the internal reference points to freed memory and causes a use-after-free.