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CVE-2023-42114 is an out-of-bounds read vulnerability in Exim's SPA/NTLM authentication subsystem while handling NTLM challenge requests. Insufficient validation of attacker-supplied data can cause Exim to read past the end of an allocated data structure. An unauthenticated remote attacker can exploit the flaw to disclose limited sensitive information accessible to the Exim service account. The vulnerability is also tracked as ZDI-23-1468 and has a CVSS v3 score of 3.7.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
8 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Low-severity Exim information-disclosure vulnerability requiring SPA/NTLM authentication configured for Exim to authenticate to an upstream server.
One of six reported Exim vulnerabilities affecting Exim versions before 4.96.1 and 4.97; fixes were released on 2023-09-02.
One of six reported Exim vulnerabilities affecting Exim versions before 4.96.1 and 4.97; fixes were released on 2023-09-02.
Vulnérabilité dans le sous-système SPA/NTLM d'Exim permettant une atteinte à la confidentialité des données et une exécution de code arbitraire via une mauvaise validation des entrées utilisateur.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.