Stack Buffer Over-read in Apache HTTP Server mod_ssl OCSP send_request
CVE-2026-44185 is a low-severity stack buffer over-read in Apache HTTP Server's mod_ssl, specifically in the OCSP send_request code path. The flaw affects Apache HTTP Server versions 2.4.0 through 2.4.67. It can be triggered when httpd performs outbound OCSP requests and communicates with an attacker-controlled OCSP server, causing mod_ssl to read beyond the bounds of a stack buffer while processing the OCSP interaction.
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Impact, mitigation & remediation
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
Impact
What an attacker gets, and what they’ve been doing with it.
Mitigation
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Remediation
Patch, then assume compromise.
Exploits
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Affected products & vendors
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
Recent activity
8 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A stack buffer over-read vulnerability in Apache HTTP Server mod_ssl OCSP send_request via attacker-controlled OCSP servers.
Apache HTTP Server mod_ssl vulnerability related to OCSP handling/processing, fixed in version 2.4.68.
Denial-of-service vulnerability in Apache HTTP Server mod_ssl when processing OCSP responder responses.
A buffer over-read vulnerability in Apache HTTP Server mod_ssl during outbound OCSP requests to an attacker-controlled OCSP server.
The version that knows your environment.
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.