CVE-2026-55995 is a double-free vulnerability in the iSNS attribute decoder used by open-iSNS/open-iscsi functionality. Incorrect release of a resource or reference can be triggered while processing iSNS attributes, causing the affected service to terminate or otherwise become unavailable. Affected versions extend through commit 56718d4e9d1a4f51c30697b5c0534144bb41c9bb.
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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.
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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.
16 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A vulnerability affecting the isns-utils-devel and isns-utils-libs packages on Alibaba Cloud Linux 3. The supplied CVSS vectors characterize it as an unauthenticated, low-complexity network vulnerability whose primary impact is high availability loss.
A network-reachable, unauthenticated denial-of-service vulnerability caused by a double-free in the iSNS attribute decoder in open-isns/open-iscsi functionality. It affects isns-utils packages on Red Hat Enterprise Linux 8 and can result in complete availability loss.
A network-reachable denial-of-service vulnerability in the open-isns/open-iscsi iSNS attribute decoder caused by a double-free condition. It affects isns-utils packages on Red Hat Enterprise Linux 8 and can cause loss of availability.
A remotely exploitable, low-complexity, unauthenticated vulnerability affecting TencentOS Server 3 that impacts availability only according to the supplied CVSS vectors.
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.