CVE-2026-58956
In modpowF4 of avb_rsa.c, there is a possible signature verification bypass due to a logic error...
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.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
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.
- Record
CVE-2026-58956- CVSS 3.1
- 8.4 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-693
- Updated
- 2026-11-04
EUVDEUVD-2026-115395
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.
- Record
EUVD-2026-115395- CVSS 3.1
- 8.4 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-04
GitHub AdvisoriesGHSA-xw9j-cc7f-69wg
In modpowF4 of avb_rsa.c, there is a possible signature verification bypass due to a logic error...
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.
- Record
GHSA-xw9j-cc7f-69wg- CVSS 3.1
- 8.4 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-693
- Updated
- 2026-11-03
NVD
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.
- Record
CVE-2026-58956- CVSS 3.1
- 8.4 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-693
- Updated
- 2026-11-05
OSVASB-A-461507723 No score
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.
- Record
ASB-A-461507723- Updated
- 2026-11-06
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
platform/external/avbAndroid |
17-qpr2-next:0 up to 17-qpr2-next:2026-11-01, plus listed versions 17-qpr2-next |
17-qpr2-next:2026-11-01 |
platform/external/avbAndroid |
15:0 up to 15:2026-11-01, plus listed versions 15 |
15:2026-11-01 |
platform/external/avbAndroid |
16:0 up to 16:2026-11-01, plus listed versions 16 |
16:2026-11-01 |
platform/external/avbAndroid |
16-qpr2:0 up to 16-qpr2:2026-11-01, plus listed versions 16-qpr2 |
16-qpr2:2026-11-01 |
platform/external/avbAndroid |
17:0 up to 17:2026-11-01, plus listed versions 17 |
17:2026-11-01 |
platform/external/avbAndroid |
14:0 up to 14:2026-11-01, plus listed versions 14 |
14:2026-11-01 |
History
| Recorded | Changed | Sources |
|---|---|---|
| references | CVE List, EUVD, GitHub Advisories, NVD, OSV | |
| cwes, severity | CVE List | |
| facts | NVD | |
| aliases | EUVD | |
| aliases, references, title | GitHub Advisories, NVD | |
| first indexed | CVE List, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-58956 is a high vulnerability (CVSS 8.4) in Google Android, published November 1, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.09%, the 0th percentile. Fixed in platform/external/avb 17-qpr2-next:2026-11-01.