Google Android kernel: Heap buffer overflow leads to local privilege escalation
Summary
A heap-based buffer overflow in multiple locations of the Android kernel allows an out-of-bounds write. A local attacker with System-level privileges could escalate privileges further. No user interaction is required. The flaw is listed in Google's Pixel Update Bulletin for November 2026 and is fixed in patch level 2026-11-05.
Affected
- Google Android kernel, as named in the CVE record (default: unaffected)
- Pixel devices with a security patch level before 2026-11-05
- Exact affected Android versions for this CVE: Unknown.
Fixed in
- Security patch level 2026-11-05 or later (Pixel Update Bulletin November 2026)
Workaround
Unknown. No vendor workaround documented; the patch is the only fix.
Exploitation
- CISA SSVC: Exploitation none, Automatable no, Technical Impact total
- No evidence of exploitation in the wild found in the research.
- No public proof of concept found.
Our recommendation
- Check the security patch level of all Pixel devices and update to 2026-11-05 or later.
- Enforce the patch level through MDM and track devices that are behind.
- Pixel 6 and 6 Pro may no longer receive fixes; verify support status on Google's support pages and plan replacement.
- Monitor NVD and the CISA KEV catalog, because NVD analysis was still pending at the time of research.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- CVE Record CVE-2026-58696 www.cve.org
- Pixel Update Bulletin November 2026 source.android.com
- OSV record PUB-A-505398752 osv.dev
- 9to5Google: Android 17 QPR2 November Pixel update 9to5google.com
Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 11 Nov 2026, 11:25.
Original description (NVD)
In multiple locations, there is a possible out-of-bounds write due to a heap buffer overflow. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.
NVD references (1)
Sources
The tracker combines official, freely usable data sources – updated continuously:
- NVD (NIST) – CVEs, rating (CVSS), affected products
- CISA KEV – vulnerabilities confirmed by CISA as actively exploited
- CISA Vulnrichment – CISA assessment (SSVC) in the official CVE record
- FIRST EPSS – probability of exploitation
- Microsoft MSRC – Patch Tuesday: vulnerabilities, severity, updates
- PoC-in-GitHub – public proof-of-concept repositories
- Metasploit (Rapid7) – modules of the Metasploit Framework
- Exploit-DB (OffSec) – archive of public exploits (links only)
- Patch days: official vendor pages (linked per vendor) (Vendor patch days)
This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.
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