CVE-2026-54436

EUVD-2026-122791
Heap-based Buffer
Overflow in the io-char library's DCMD_CHR_WAITINFO devctl() handler could
allow an attacker with local access to cause data tampering, arbitrary code
execution, or a crash in the Character I/O device driver.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.4 HIGH
LOCAL
HIGH
NONE
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Common Weakness Enumeration
References
https://support.blackberry.com/pkb/s/article/141341