CVE-2026-74557: scsi: libiscsi: Fix stale-data leak into the SCSI sense buffer
CSIRTS triage
- What
- libiscsi fails to clear the SCSI sense buffer, leaking stale data from previous requests.
- Who is affected
- Systems using iSCSI initiator with libiscsi library.
- Urgency
- Medium priority; information disclosure of sensitive data but not actively exploited.
- Action
- Apply kernel patch to clear SCSI sense buffer before reuse in libiscsi.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-74557
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-2026-745570.33% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 26% of all EPSS-scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-74557 | coverage & exploitation status | NVD · CVE.org |
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