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Vulnerability details

CVE-2025-49176

Red Hat Enterprise Linux 6X.Org xwayland

Xorg-x11-server-xwayland: xorg-x11-server: tigervnc: integer overflow in big requests extension

CVSS 3.1
7.3High

Official description

A flaw was found in the Big Requests extension. The request length is multiplied by 4 before checking against the maximum allowed size, potentially causing an integer overflow and bypassing the size check.

CVSS scores

ScoreVersionSourceVector
7.3High 3.1 CVEProject cvelistV5 (CNA) (redhat) CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H

Affected products

VendorProductVersionsSource
Red Hat Red Hat Enterprise Linux 6 All CVEProject cvelistV5 (CNA)
X.Org xwayland v < 24.1.7 CVEProject cvelistV5 (CNA)

References and advisories

35
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Details

Published
2025-06-17
Last updated
2026-11-05
State
Published
Assigner (CNA)
redhat

Exploit prediction (EPSS)

0.36%
Probability of exploitation in 30 days
30.6%
Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable
No
Exploitation
None
Technical impact
Partial

Weaknesses (CWE)

  • CWE-190
    Integer Overflow or Wraparound