CVE-2026-84268
Malicious SFTP server triggers heap overflow in gvfs SFTP backend, causing DoS/RCE
Is CVE-2026-84268 being exploited?
Not confirmed. CVE-2026-84268 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.33% probability of exploitation in the next 30 days.
How severe is CVE-2026-84268?
CVE-2026-84268 is rated High with a CVSS score of 8.8. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-84268?
Yes. A fix has been recorded for CVE-2026-84268. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-84268 affect?
CVE-2026-84268 affects GNOME gvfs (gvfsd-sftp), Linux desktops using gvfs (e.g., Fedora, RHEL, Ubuntu), Apps mounting SFTP via gvfs. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-84268?
Update gvfs/gvfsd-sftp to patched version and avoid untrusted SFTP servers.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote SFTP server can cause heap overflow in gvfsd-sftp, leading to client process crash (DoS) or potential remote code execution.
Immediate action required
- affected< 1.60.2
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.