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CVE-2022-3437 is a heap-based buffer overflow in Heimdal GSSAPI routines unwrap_des() and unwrap_des3(), including code used by Samba. When processing a maliciously small DES or Triple-DES protected packet, the decryption path can perform a length-limited write beyond a malloc()-allocated buffer.
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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.
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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.
7 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A medium-severity heap-based buffer-overflow vulnerability in Samba within Heimdal that could enable denial of service. Apple addressed it in macOS Tahoe 26.7.
A remotely reachable heap-based buffer overflow in Heimdal GSSAPI DES/Triple-DES unwrap routines used by Samba. A maliciously small packet can cause denial of service.
A remotely triggerable heap-based buffer overflow in Heimdal GSSAPI DES/Triple-DES unwrap routines used by Samba. A crafted packet may cause denial of service.
Third-party-assigned vulnerability affecting macOS Tahoe and enabling sensitive-information disclosure from a privileged network position.
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.