IBM Verify Access/Identity Access DoS via Heap OOB Read (10.0-10.0.9.2, 11.0-11.0.3)
CVE-2026-12091 Published on October 8, 2026
Security vulnerabilities have been found in IBM Verify Identity Access and IBM Security Verify Access
IBM Security Verify Access 10.0 through 10.0.9.2 and IBM Verify Identity Access 11.0 through 11.0.3 could allow a denial of service due to a heap-based out-of-bounds read. A remote attacker could send a specially crafted request that causes a limited outofbounds memory read.
Vulnerability Analysis
CVE-2026-12091 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is consided to have a high level of attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a small impact on availability.
Weakness Type
Out-of-bounds Read
The software reads data past the end, or before the beginning, of the intended buffer. Typically, this can allow attackers to read sensitive information from other memory locations or cause a crash. A crash can occur when the code reads a variable amount of data and assumes that a sentinel exists to stop the read operation, such as a NUL in a string. The expected sentinel might not be located in the out-of-bounds memory, causing excessive data to be read, leading to a segmentation fault or a buffer overflow. The software may modify an index or perform pointer arithmetic that references a memory location that is outside of the boundaries of the buffer. A subsequent read operation then produces undefined or unexpected results.
Products Associated with CVE-2026-12091
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Affected Versions
IBM Security Verify Access:- Version 10.0, <= 10.0.9.2 is affected.
- Version 11.0, <= 11.0.3 is affected.
- Version 10.0, <= 10.0.9.2 is affected.
- Version 11.0, <= 11.0.3 is affected.