CVE-2026-94054High· 7.0▾ TwilightExim before 4.100.1, when Proxy-Protocol is used with an attacker-controlled proxy, has an out-of-bounds write.
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 38.5 · likelihood 0.1 · exploitation 0
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Exploit-prediction probability, daily snapshots since Sep 20.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.3%
Exim before 4.100.1, when Proxy-Protocol is used with an attacker-controlled proxy, has an out-of-bounds write.
Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-94056High· 7.5Exim before 4.100.1, when Proxy-Protocol is used with an attacker-controlled proxy, allows attackers to read certain uninitialized data from stack memory.
CVE-2026-94057Medium· 4.0Exim before 4.100.1 allows SMTP smuggling in which the received message does not match any sent message, and instead depends on crafted data sent after a rejection during DATA processing.
CVE-2026-94055Low· 3.7Exim before 4.100.1, when certain non-default TLS settings are used with GnuTLS, has a use-after-free.
CVE-2022-0995High· 7.8An out-of-bounds (OOB) memory write flaw was found in the Linux kernel’s watch_queue event notification subsystem
CVE-2021-4090High· 7.1An out-of-bounds (OOB) memory write flaw was found in the NFSD in the Linux kernel
CVE-2020-1054High· 7.0An elevation of privilege vulnerability exists in Windows when the Windows kernel-mode driver fails to properly handle objects in memory