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CVE-2025-68160 is a heap-based out-of-bounds write in OpenSSL's line-buffering BIO filter, BIO_f_linebuffer. The flaw is triggered when large data containing no newline characters is written through a BIO chain using this filter and the next BIO in the chain performs short writes. Under those conditions, the line-buffering logic can write past the bounds of a heap buffer, causing memory corruption. The issue affects OpenSSL 3.6, 3.5, 3.4, 3.3, 3.0, 1.1.1, and 1.0.2. The vulnerable functionality is outside the OpenSSL FIPS module boundary, so the FIPS modules for affected 3.x branches are not impacted. The filter is not used by default in standard TLS/SSL data paths, which substantially limits typical exposure.
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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.
35 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A vulnerability in OpenSSL addressed indirectly through upgraded third-party components in Tenable Security Center.
An OpenSSL vulnerability patched by upgrading to OpenSSL 3.6.1 in IPFire Core Update 200.
Unknown (listed among related OpenSSL CVEs, but not described in the content).
Low-severity OpenSSL heap out-of-bounds write in the BIO linebuffer functionality, triggered by crafted inputs in affected code paths.
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.