Loading vulnerability…
CVE-2026-45447 is a use-after-free vulnerability in OpenSSL PKCS#7 signature verification. When PKCS7_verify() processes a specially crafted PKCS#7 or S/MIME signed message whose SignedData digestAlgorithms field is an empty ASN.1 SET, it can incorrectly free a caller-owned BIO. Subsequent use of that BIO by the calling application, including a later free operation, causes a use-after-free condition. Applications using OpenSSL CMS APIs rather than the PKCS#7 APIs for this processing are not affected. The vulnerable logic is outside the OpenSSL FIPS module boundary.
Mallory correlates every CVE against your assets, your vendors, and active adversary campaigns. Know which vulnerabilities matter for you, not just which ones are loud.
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.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No valid public exploits. Mallory filtered out 2 candidates as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
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.
96 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A heap use-after-free vulnerability in OpenSSL's PKCS7_verify() function affecting OpenSSL packages on Red Hat Enterprise Linux 6.
A vulnerability referenced by Huawei EulerOS security advisory SA-2026-3288 affecting listed OpenSSL 1.1.1m packages. It is assigned a CVSS v2 vector of AV:N/AC:L/Au:N/C:C/I:C/A:C; no technical flaw description is provided.
A vulnerability addressed by Huawei EulerOS security advisory EulerOS_SA-2026-3311 affecting EulerOS 2.0/shim. The content provides a CVSS v2 vector of AV:N/AC:L/Au:N/C:C/I:C/A:C.
A remotely reachable vulnerability referenced in the Huawei EulerOS SA-2026-3363 advisory affecting EulerOS 2.0 OpenSSL 1.1.1m packages. Its listed CVSS v2 vector indicates low-complexity network exploitation with complete confidentiality, integrity, and availability impact.
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.