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CVE-2025-9232 is a low-severity out-of-bounds read vulnerability in OpenSSL's HTTP client API handling of the no_proxy environment variable. The flaw is triggered when an application uses the OpenSSL HTTP client API functions, the no_proxy environment variable is set, and the host portion of the authority component of a supplied HTTP URL is an IPv6 address. Under those conditions, vulnerable code can read memory past the intended bounds while processing proxy-exclusion logic. The issue affects OpenSSL branches where the vulnerable code was introduced in patch releases 3.0.16, 3.1.8, 3.2.4, 3.3.3, 3.4.0, and 3.5.0. The HTTP client API may be invoked directly by applications and is also used by OpenSSL OCSP client functions and CMP client functionality, although those latter URL inputs are considered unlikely to be attacker-controlled. The OpenSSL FIPS modules are not affected because the vulnerable HTTP client implementation is outside the FIPS module boundary.
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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.
40 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Denial-of-service condition associated with an outdated OpenSSL version used by SAP NetWeaver AS Java Adobe Document Services component.
An out-of-bounds read vulnerability in HTTP client no_proxy handling in OpenSSL.
An out-of-bounds read in HTTP client no_proxy handling in OpenSSL.
An out-of-bounds read in HTTP client no_proxy handling in OpenSSL, fixed in the 3.5.4 security patch release.
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.