CVE-2026-55995: Double-free in the iSNS attribute decoder in open-iscsi

unknownCVE-2026-55995

CSIRTS triage

vendor: open-iscsi product: open-iscsi Memory corruption

What: A double-free vulnerability in the iSNS attribute decoder allows memory corruption.
Who is affected: Systems running affected open-iscsi versions with iSNS support enabled.
Urgency: Severity unknown but double-free is exploitable for code execution; prioritize investigation and patching.
Action: Apply open-iscsi patch fixing double-free in iSNS attribute decoder.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source: Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity: unknown
Published: 2026-08-06
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55995

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-559950.25% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 17% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-55995	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

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