CVE-2026-80598: ntfs3: fix out-of-bounds read in decompress_lznt
CSIRTS triage
- What
- The NTFS3 filesystem driver contains an out-of-bounds read vulnerability in the decompress_lznt function.
- Who is affected
- Systems using NTFS3 filesystem driver with untrusted NTFS volumes.
- Urgency
- Low severity (CVSS 3.3); not currently exploited but could leak information from kernel memory.
- Action
- Apply kernel security patch addressing CVE-2026-80598 when available from your distribution.
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-2026-80598
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-2026-805980.13% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 3% of all EPSS-scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-80598 | coverage & exploitation status | NVD · CVE.org |
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