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NVD / CVE Program· CNA redhat

CVE-2026-84268: Gvfs: sftp: heap-based buffer overflow in read_reply()

Noroxi assessment

Priority: Monitor (action score 35/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.62% (FIRST EPSS); higher than 50.1% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. A user must open a link or visit a page. No special conditions are required; it is repeatable.
  • Fixed version: GNOME gvfs 1.60.2.

Low priority for now. Upgrade to GNOME gvfs 1.60.2 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

HighCVSS 8.8 · v3.1—No exploit Fix available
Published
Sep 1, 2026
Updated
Nov 5, 2026
EPSS
0.6% · 50th percentile

Report tools

JSON

Action score

35

Monitor

Low priority for now.

CVSS
35 / 40 · 8.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.6%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · redhat
8.8
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

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  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

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  • when exploit code appears or is weaponized
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  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (redhat). Independent of NVD's CPE analysis and usually ahead of it.

  • GNOME gvfs

    • before 1.60.2affected · semver

  • Red Hat Red Hat Enterprise Linux 10

    • 0:1.54.4-4.el10_2.1 and laternot affected · rpm

  • Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support

    • 0:1.54.4-2.el10_0.2 and laternot affected · rpm

  • Red Hat Red Hat Enterprise Linux 6

    • all versionsunknown

  • Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support

    • 0:1.36.2-7.el7_9.1 and laternot affected · rpm

  • Red Hat Red Hat Enterprise Linux 8

    • 0:1.36.2-22.el8_10 and laternot affected · rpm

  • Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support

    • 0:1.36.2-11.el8_4.1 and laternot affected · rpm

  • Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On

    • 0:1.36.2-11.el8_4.1 and laternot affected · rpm

  • Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support

    • 0:1.36.2-11.el8_6.1 and laternot affected · rpm

  • Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On

    • 0:1.36.2-11.el8_6.1 and laternot affected · rpm

  • Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service

    • 0:1.36.2-14.el8_8.1 and laternot affected · rpm

  • Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions

    • 0:1.36.2-14.el8_8.1 and laternot affected · rpm

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
AlmaLinux:10gvfsbefore 1.54.4-4.el10_2.11.54.4-4.el10_2.1
AlmaLinux:10gvfs-clientbefore 1.54.4-4.el10_2.11.54.4-4.el10_2.1
AlmaLinux:10gvfs-fusebefore 1.54.4-4.el10_2.11.54.4-4.el10_2.1
AlmaLinux:10gvfs-goabefore 1.54.4-4.el10_2.11.54.4-4.el10_2.1
AlmaLinux:10gvfs-gphoto2before 1.54.4-4.el10_2.11.54.4-4.el10_2.1
AlmaLinux:10gvfs-mtpbefore 1.54.4-4.el10_2.11.54.4-4.el10_2.1
AlmaLinux:10gvfs-smbbefore 1.54.4-4.el10_2.11.54.4-4.el10_2.1
AlmaLinux:8gvfsbefore 1.36.2-22.el8_101.36.2-22.el8_10
AlmaLinux:8gvfs-afcbefore 1.36.2-22.el8_101.36.2-22.el8_10
AlmaLinux:8gvfs-afpbefore 1.36.2-22.el8_101.36.2-22.el8_10
AlmaLinux:8gvfs-archivebefore 1.36.2-22.el8_101.36.2-22.el8_10
AlmaLinux:8gvfs-clientbefore 1.36.2-22.el8_101.36.2-22.el8_10
AlmaLinux:8gvfs-develbefore 1.36.2-22.el8_101.36.2-22.el8_10
AlmaLinux:8gvfs-fusebefore 1.36.2-22.el8_101.36.2-22.el8_10
AlmaLinux:8gvfs-goabefore 1.36.2-22.el8_101.36.2-22.el8_10
AlmaLinux:8gvfs-gphoto2before 1.36.2-22.el8_101.36.2-22.el8_10
AlmaLinux:8gvfs-mtpbefore 1.36.2-22.el8_101.36.2-22.el8_10
AlmaLinux:8gvfs-smbbefore 1.36.2-22.el8_101.36.2-22.el8_10
AlmaLinux:9gvfsbefore 1.48.1-8.el9_8.11.48.1-8.el9_8.1
AlmaLinux:9gvfs-clientbefore 1.48.1-8.el9_8.11.48.1-8.el9_8.1
AlmaLinux:9gvfs-develbefore 1.48.1-8.el9_8.11.48.1-8.el9_8.1
AlmaLinux:9gvfs-fusebefore 1.48.1-8.el9_8.11.48.1-8.el9_8.1
AlmaLinux:9gvfs-goabefore 1.48.1-8.el9_8.11.48.1-8.el9_8.1
AlmaLinux:9gvfs-gphoto2before 1.48.1-8.el9_8.11.48.1-8.el9_8.1

+65

Same product

gnome: all records

Other highest-scoring records for the same primary product.

  • CVE-2019-12448An issue was discovered in GNOME gvfs 1.29.4 through 1.41.2.
    33Monitor
  • CVE-2019-12795daemon/gvfsdaemon.c in gvfsd from GNOME gvfs before 1.38.3, 1.40.x before 1.40.2, and 1.41.x before 1.41.3 opened a private D-Bus server…
    31Monitor
  • CVE-2019-12447An issue was discovered in GNOME gvfs 1.29.4 through 1.41.2.
    30Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2019-12449May 29, 2019 · An issue was discovered in GNOME gvfs 1.29.4 through 1.41.2.
    23Monitor
  • ← EarlierCVE-2026-84267Sep 1, 2026 · Gvfs: sftp: uninitialized heap disclosure in read_string()
    17Monitor
  • Later →CVE-2026-84269Sep 1, 2026 · Gvfs: afp: heap-based buffer overflow in dsi read path
    26Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
GNOME gvfs1.60.2Vendor (CNA)
almalinux:gvfs1.36.2-22.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:gvfs-afc1.36.2-22.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:gvfs-afp1.36.2-22.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:gvfs-archive1.36.2-22.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:gvfs-client1.36.2-22.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:gvfs-devel1.36.2-22.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:gvfs-fuse1.36.2-22.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:gvfs-goa1.36.2-22.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:gvfs-gphoto21.36.2-22.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:gvfs-mtp1.36.2-22.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:gvfs-smb1.36.2-22.el8_10 · AlmaLinux:8Package registry (OSV)
debian:gvfs1.62.0-1 · Debian:14Package registry (OSV)
opensuse:gvfs1.60.3-1.1 · openSUSE:TumbleweedPackage registry (OSV)
red hat:gvfs0:1.36.2-22.el8_10 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:gvfs-afc0:1.36.2-22.el8_10 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:gvfs-afc-debuginfo0:1.36.2-22.el8_10 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:gvfs-afp0:1.36.2-22.el8_10 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:gvfs-afp-debuginfo0:1.36.2-22.el8_10 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:gvfs-archive0:1.36.2-22.el8_10 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:gvfs-archive-debuginfo0:1.36.2-22.el8_10 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:gvfs-client0:1.36.2-22.el8_10 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:gvfs-client-debuginfo0:1.36.2-22.el8_10 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:gvfs-debuginfo0:1.36.2-22.el8_10 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:gvfs-debugsource0:1.36.2-22.el8_10 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:gvfs-devel0:1.36.2-22.el8_10 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
rocky linux:gvfs0:1.36.2-22.el8_10 · Rocky Linux:8Package registry (OSV)
suse:gvfs1.28.3-18.12.1 · SUSE:Linux Enterprise Server 12 SP5-LTSSPackage registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2026-842690 days apartGvfs: afp: heap-based buffer overflow in dsi read path
    26Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • A user must open a link or visit a page.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-122 · Heap-based Buffer Overflow

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (13 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records