CVE-2026-41991: Predictable Temporary File in GNU gzip
CSIRTS triage
- What
- A predictable temporary file vulnerability exists in GNU gzip.
- Who is affected
- Users of GNU gzip are affected.
- Urgency
- The urgency is unknown as the severity is not specified.
- Action
- Monitor for updates regarding this vulnerability.
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-2026-41991
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-2026-419910.10% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 1% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-41991 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
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