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CVE-2026-5507 is a medium-severity memory management flaw in wolfSSL session restoration logic. When restoring a session from cache, wolfSSL uses a pointer value taken from serialized session data in a free operation without validating that the pointer is legitimate. If an attacker can poison the serialized session cache entry with crafted data, the application may perform an arbitrary free when it invokes the affected session restore APIs. The issue is described as occurring during restoration of a session from cache and is fixed in wolfSSL 5.9.1.
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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.
2 sources tracked across advisories and community write-ups. News coverage will land here when it surfaces.
No news coverage yet. Advisories and community discussion only.
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.