CVE-2025-49176

HIGH
MEDIUM Priority: 0.03 BB Relevance: 40/100
Published: 2025-06-17 Modified: 2026-11-04 First seen: 2026-11-04 Status: active

Attack Surface

Low Complexity No Interaction Integ. Impact

CVSS Vector Breakdown

AV: Local
AC: Low
PR: Low
UI: None
S: Unchanged
C: Low
I: High
A: High

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.

Affected Software (1)

VendorProductVersion
X.Org xwayland 0 < 24.1.7

References & Advisories (35)

https://access.redhat.com/errata/RHSA-2025:10258
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:10342
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:10343
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:10344
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:10346
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:10347
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:10348
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:10349
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:10350
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:10351
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:10352
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:10355
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:10356
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:10360
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:10370
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:10374
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:10375
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:10376
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:10377
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:10378
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:10381
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:10410
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:9303
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:9304
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:9305
vendor-advisory x_refsource_REDHAT
Showing 25 of 35 references

Bug Bounty Relevance

40 / 100
✓ Low complexity
✓ No user interaction

CVSS Score

7.3 / 10.0 v3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H

EPSS — Exploitation Probability

0.38%
Raw Score 0.003820
Percentile 32.7%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00382
2026-11-12
0.00366
2026-11-10
0.00366
2026-11-09
0.00366
2026-11-08
0.00366
2026-11-07
0.00366
2026-11-06
0.00366
2026-11-05
0.00366
2026-11-04
0.00366

Intelligence Sources

mitre ref →
nvd ref →