CVE-2026-84268Gvfs: sftp: heap-based buffer overflow in read_reply()
Updated under an hour ago ()
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It affects GNOME gvfs and 1 other product. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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Free account, 1 product
A flaw was found in the SFTP backend in gvfs. When mounting a share and reading a file, a malicious SFTP server can cause read_reply() to process a length that exceeds the size requested by the client. The function does not verify the server-provided length against the allocated buffer size, causing the operation to write past the intended boundaries. This issue allows a malicious server to corrupt adjacent heap memory in the gvfsd-sftp process, resulting in a denial of service as the process aborts upon detecting the heap corruption or potentially allowing arbitrary code execution.
- CVSS
- 8.8 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-122
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- redhat
- NVD analysis
- Awaiting Analysis
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
GNOME gvfs gnome:gvfs (from the name) | before 1.60.2 | CNA record |
Red Hat Red Hat Enterprise Linux 10 redhat:enterprise_linux | from 0:1.54.4-4.el10_2.1 not affected | CNA record |
References
- https://access.redhat.com/errata/RHSA-2026:73997vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:73998vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:74370vendor-advisory, x-refsource-redhat
- https://access.redhat.com/security/cve/CVE-2026-84268vdb-entry, x-refsource-redhat
- https://bugzilla.redhat.com/show_bug.cgi?id=2526485issue-tracking, x-refsource-redhat
- https://gitlab.gnome.org/GNOME/gvfs/-/issues/862
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.