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CVE-2026-89028

MikroTik RouterOS < 7.24 Heap Corruption via SMB1 SessionSetupAndX PUBLISHED

Description (CNA)

MikroTik RouterOS before 7.24 contains a heap memory corruption vulnerability in the userspace SMB daemon that allows remote attackers to corrupt adjacent heap memory by supplying a crafted uniPwdLen value in the SMB1 SessionSetupAndX handler. An attacker can send a malformed SMB1 request with a uniPwdLen field that triggers an integer underflow, causing the resulting value to be used as the copy length in a memory copy operation into a smaller heap buffer, corrupting adjacent heap memory.

Affected (CNA)

Vendor / productVersions
MikroTik / RouterOSaffected 0 through 6.49.18; affected 7.0.0 through 7.11.2; unaffected 7.24.0

CWE

CWE-122, CWE-191

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.