Privilege elevation in Google Chrome on iOS via crafted HTML page
Key facts
- Attack vector
- —
- Privileges required
- —
- User interaction
- —
- Attack complexity
- —
- Impact type
- Privilege escalation
- Confidentiality · integrity · availability
- —
- Fix status
- Fixed
No CVSS vector from any source. Fix status from CNA. Impact type from CWE-250.
Summary
Google Chrome on iOS before 157.0.8103.38 is affected. The Mobile component runs with unnecessary privileges (CWE-250), which lets a remote attacker bypass system access restrictions and reach a privileged page. An attacker can do this by serving a crafted HTML page.
Written with Claude Haiku 5.5 from the sources below · 2026-11-04
Description from the CNA
Privilege elevation in Mobile in Google Chrome on on iOS prior to 157.0.8103.38 allowed a remote attacker to bypass system access restrictions into a privileged page via a crafted HTML page. (Chromium security severity: Medium)
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
Remediation
Google Chrome on iOS is fixed in version 157.0.8103.38.
Written with Claude Haiku 5.5 from the sources below · 2026-11-04
- Fix · CNA Chrome (Google) Fixed in 157.0.8103.38
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Google Chrome 157.0.8103.38
213 records Highest priority Priority MEDIUM 96 MEDIUM, 117 LOW
Other records, highest priority first
- TI-2026-84793 Use after free in Chrome TabStrip lets remote attackers run codePriority MEDIUM 43
- TI-2026-84786 Use after free in Google Chrome Extensions allows code executionPriority MEDIUM 43
- TI-2026-84785 Buffer overflow in ANGLE in Google Chrome allows code executionPriority MEDIUM 43
Vendor assessments
Timeline
- 2026-11-03 Threatist record created from CVE-2026-121196
- 2026-11-03 Alias added: GHSA-8xf8-687h-f4fm
- 2026-11-04 Affected versions changed · Red Hat
- 2026-11-04 CVSS score added · Red Hat
References
More Google vulnerabilities
- TI-2025-09686 Type confusion in Google Chrome KEVCVSS 3.1CRITICAL 9.8
- TI-2024-07390 Type confusion in Google Chrome KEVCVSS 3.1CRITICAL 9.6
- TI-2024-04898 Type confusion in Google Chrome KEVCVSS 3.1CRITICAL 9.6
- TI-2024-04600 Type confusion in Google Chrome KEVCVSS 3.1CRITICAL 9.6
- TI-2024-04346 Use after free in Google Chrome KEVCVSS 3.1CRITICAL 9.6
- TI-2023-05824 Integer overflow in Google Chrome KEVCVSS 3.1CRITICAL 9.6
Sources
- CVE-2026-121196 · CVE Program
- CVE-2026-121196 · NVD
- FIRST EPSS
- GHSA-8xf8-687h-f4fm · GitHub Advisory Database · CC BY 4.0
- CVE-2026-121196 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences