Dashboard / CVE-2026-32853

CVE-2026-32853

MEDIUM
MEDIUM Priority: 0.03 BB Relevance: 74/100
Published: 2026-03-24 Modified: 2026-11-08 First seen: 2026-11-08 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
AT: None
VC: Low
VI: None
VA: Low

Description

LibVNCServer versions 0.9.15 and prior (fixed in commit 009008e) contain a heap out-of-bounds read vulnerability in the UltraZip encoding handler that allows a malicious VNC server to cause information disclosure or application crash. Attackers can exploit improper bounds checking in the HandleUltraZipBPP() function by manipulating subrectangle header counts to read beyond the allocated heap buffer.

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
LibVNC LibVNCServer 0

References & Advisories (3)

Bug Bounty Relevance

74 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

6.9 / 10.0 v4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N

EPSS — Exploitation Probability

0.46%
Raw Score 0.004550
Percentile 40.0%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00455
2026-11-12
0.00455
2026-11-10
0.00455
2026-11-09
0.00445
2026-11-08
0.00445

Intelligence Sources

mitre ref →

External Links