CVE-2026-58956VulnerabilityPublished
In modpowF4 of avb_rsa.c, there is a possible signature verification bypass due to a logic error in the code.
Written by anthropic/claude-haiku-5.5 from the sources below. Verify against them.
A 0-10 score for how bad the bug is in the worst case. It does not say how common the affected setup is.What do these mean? →—Not rated
- Exploited
- No known exploitation
- Fix
- No fix listed
- Who is exposed
- Not reported
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- Published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- A 0-100 score for how much a CVE matters across the industry: exploitation, exposure, how widely the software is used, severity and whether a fix exists.What do these mean? →
- 5/100 · provisional
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
The avb_rsa.c component used in Android Verified Boot (AVB) contains a logic error that can allow signature verification to be bypassed. A successful attack could let a local user gain higher privileges on the affected device without needing extra permissions or any user interaction.
Read the original description
In modpowF4 of avb_rsa.c, there is a possible signature verification bypass due to a logic error in the code. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.
Timeline
- CVE published
- First seen by cve.now
Affected versions
- Google Android
17, 16-qpr2, 16, 15, 14
Evidence 1
- Link
Corrections
None so far.
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