HIGHCVSS 8.1
A stack-based buffer overflow flaw was found in fetchmail when built with NTLM support. A malicious or compromised mail server advertising NTLM authentication can send a crafted Type 2 challenge that causes fetchmail to write past a fixed stack buffer while building the NTLM authenticate response. This may lead to remote code execution depending on stack-frame layout, or to authentication failure or process termination under memory hardening. Affects v5.0.8 through v6.6.6.
Published 2026-09-21 · last modified 2026-09-22
← Get alerted the moment a CVE hits your gear — subscribe freeNcerio by BeyondNets · data from NVD, CISA KEV, EPSS.