CVE-2023-40128

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-10-27 · updated 2026-06-17
Weakness: CWE-787

Description

In several functions of xmlregexp.c, there is a possible out of bounds write due to a heap buffer overflow. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.

Affected products

Android: 11.0, 12.0, 12.1, 13.0

References

https://android.googlesource.com/platform/external/libxml2/+/1ccf89b87a3969edd56956e2d447f896037c8be7
https://source.android.com/security/bulletin/2023-10-01
https://android.googlesource.com/platform/external/libxml2/+/1ccf89b87a3969edd56956e2d447f896037c8be7
https://source.android.com/security/bulletin/2023-10-01

Get alerted when CVE-2023-40128 or the next vulnerability affects your stack