CVE-2026-48855: SFTP READLINK Leaks Absolute Backend Filesystem Path When Root Is Configured
CSIRTS triage
- What
- SFTP READLINK can leak absolute backend filesystem paths when root is configured.
- Who is affected
- Deployments using SFTP with root configuration.
- Urgency
- Remediation is medium urgency due to potential information disclosure.
- Action
- Review SFTP configurations to prevent path leakage.
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-2026-48855
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-2026-488550.28% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 20% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-48855 | coverage & exploitation status | NVD · CVE.org |
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