CVE-2026-121217

HIGH
MEDIUM Priority: 0.01 BB Relevance: 50/100
Published: 2026-11-03 Modified: 2026-11-05 First seen: 2026-11-03 Status: active

Attack Surface

Adjacent No Auth No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

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

Description

Use after free in Streaming in Google Chrome prior to 157.0.8103.38 allowed an adjacent attacker to execute arbitrary code inside the sandbox via crafted network traffic. (Chromium security severity: Low)

Weakness Classification (1)

Affected Software (4)

VendorProductVersion
Google Chrome 157.0.8103.38 < 157.0.8103.38
Google Chrome 157.0.8103.38 < 157.0.8103.38
Google Chrome 157.0.8103.38 < 157.0.8103.38
google chrome < 157.0.8103.38

Bug Bounty Relevance

50 / 100
✓ No authentication
✓ No user interaction

CVSS Score

7.5 / 10.0 v3.1
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS — Exploitation Probability

0.12%
Raw Score 0.001250
Percentile 2.2%
Date 2026-11-14

EPSS Trend

2026-11-14
0.00125
2026-11-13
0.00125
2026-11-12
0.00125
2026-11-10
0.00125
2026-11-09
0.00125
2026-11-08
0.00125
2026-11-07
0.00125
2026-11-06
0.00125
2026-11-05
0.00116
2026-11-04
0.00129

Intelligence Sources

mitre ref →
nvd ref →