> CVE-2026-84268 [HIGH]

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PUBLISHED
2026-09-01 16:17
MODIFIED
2026-09-01 16:17
CVSS_SCORE V3
8.8
EPSS (Prob. Exploit)
0.36%
Top 71.9%
DATA SOURCES:
NVD đź”— 2026-09-01 CWE MITRE đź”— 2026-10-01 FIRST EPSS đź”— 2026-10-18 OSV đź”— 2026-10-26

> DESCRIPTION

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.

> AFFECTED_PRODUCTS

ℹ️ Aucun produit affecté n'a encore été publié par NVD pour cette CVE.

> CVSS V3 METRICS

CVSS_VECTOR
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EXPLOITABILITY
2.8
IMPACT
5.9

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Métrique Valeur Interprétation
AV (Vecteur d'Attaque)
Attack Vector
Network (N)
Exploit possible à distance via réseau (HTTP, API, etc.)
AC (Complexité d'Attaque)
Attack Complexity
Low (L)
Peu de conditions requises pour exploiter
PR (Privilèges Requis)
Privileges Required
None (N)
Aucune authentification requise
UI (Interaction Utilisateur)
User Interaction
Required (R)
NĂ©cessite une action utilisateur (clic lien, ouverture fichier, etc.)
S (Périmètre)
Scope
Unchanged (U)
Impact reste dans le périmètre du composant compromis
C (Impact Confidentialité)
Confidentiality Impact
High (H)
Divulgation totale d'informations
I (Impact Intégrité)
Integrity Impact
High (H)
Modification totale des données possible
A (Impact Disponibilité)
Availability Impact
High (H)
Interruption totale du service possible

> RÉSUMÉ DES IMPACTS

Confidentialité
High
Divulgation totale d'informations
Intégrité
High
Modification totale des données possible
Disponibilité
High
Interruption totale du service possible

> WEAKNESSES

CWE-122

> CWE DETAILED DESCRIPTIONS

CWE-122: Heap-based Buffer Overflow - A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().

> RED HAT SECURITY ADVISORIES

Red Hat Security Advisory: gvfs security update
An update for gvfs is now available for Red Hat Enterprise Linux 10. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CV...
Red Hat Security Advisory: gvfs security update
An update for gvfs is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVS...
Red Hat Security Advisory: gvfs security update
An update for gvfs is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVS...
Red Hat Security Advisory: gvfs security update
An update for gvfs is now available for Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions. Red Hat Product Security has rated this update as having a security impact of Important. A Comm...
Red Hat Security Advisory: gvfs security update
An update for gvfs is now available for Red Hat Enterprise Linux 10.0 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulner...
Red Hat Security Advisory: gvfs security update
An update for gvfs is now available for Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions and Red Hat Enterprise Linux 8.8 Telecommunications Update Service. Red Hat Product Security has...
Red Hat Security Advisory: gvfs security update
An update for gvfs is now available for Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions. Red Hat Product Security has rated this update as having a security impact of Important. A Comm...
Red Hat Security Advisory: gvfs security update
An update for gvfs is now available for Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support and Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On. Red Hat Produc...
Red Hat Security Advisory: gvfs security update
An update for gvfs is now available for Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support and Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On. Red Hat Produc...
Red Hat Security Advisory: gvfs security update
An update for gvfs is now available for Red Hat Enterprise Linux 7 Extended Lifecycle Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulner...
Red Hat Security Advisory: gvfs security update
An update for gvfs is now available for Red Hat Enterprise Linux 9.6 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnera...

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

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

AFFECTED PACKAGES:
Unknown / Unknown
231 versions affected

> HISTORIQUE DES MODIFICATIONS

Première apparition
01/09/2026 16:17
Source: NVD
đź“Š ENRICHISSEMENT 01/10/2026 06:01
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle valeur:
CWE-122: Heap-based Buffer Overflow - A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the bu...
Total des modifications: 1 Dernière mise à jour: 4 weeks ago

> REFERENCES

https://access.redhat.com/security/cve/CVE-2026-84268
https://bugzilla.redhat.com/show_bug.cgi?id=2526485
https://gitlab.gnome.org/GNOME/gvfs/-/issues/862
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