TigerVNC version prior to 1.10.1 is vulnerable to heap buffer overflow, which occurs in TightDecoder::FilterGradient.

Published 6 y ago 2019-12-26 · modified 4 mo ago 2026-06-17 · JSON

CVSS

7.2

v3.1 · NVD

CISA KEV

not known exploited

EPSS

4.3%

percentile 91%

Public exploits

none known

TigerVNC version prior to 1.10.1 is vulnerable to heap buffer overflow, which occurs in TightDecoder::FilterGradient. Exploitation of this vulnerability could potentially result into remote code execution. This attack appear to be exploitable via network connectivity.

Exploit prediction (EPSS)

4.28% probability of exploitation in the next 30 days, higher than 91% of all scored CVEs.

CVSS scores

Assigned by	Version	Score	Vector
NVD	3.1	7.2	`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H`
NVD	2.0	6.5	`AV:N/AC:L/Au:S/C:P/I:P/A:P`

Affected products

Kaspersky TigerVNC

Classification

Weakness

CWE-122 Heap-based Buffer Overflow
CWE-787 Out-of-bounds Write

References

github.com /CendioOssman/tigervnc/commit/b4ada8d0c6dac98c8b91fc64d112569a8ae5fb95 · x_refsource_MISC, x_transferred
github.com /TigerVNC/tigervnc/releases/tag/v1.10.1 · x_refsource_MISC, x_transferred
openwall.com /lists/oss-security/2019/12/20/2 · mailing-list, x_refsource_MLIST, x_transferred
lists.opensuse.org /opensuse-security-announce/2020-01/msg00039.html · vendor-advisory, x_refsource_SUSE, x_transferred

Sources

CVE List: CVE-2019-15693
NVD: CVE-2019-15693

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