CVE-2026-89085

Parted: parted: heap-based buffer overflow via crafted fat32 filesystem image

CVSS score

6.6

EPSS probability

%0.2

Risk score

0.0

Published

1 d ago

Overview Public Exploits (0)Newsroom Vulnerability Timeline

A patch is available only for some products or versions

Kanıt listesindeki ürün ve sürüm eşleşmesini kontrol edin; bazı varyantlar hâlâ etkileniyor olabilir.

Impact on My Inventory

Only the personal products you have added to your account are assessed; an organisation's inventory does not appear here.

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Vulnerability description

CVE AI research

The stored explanation is shown at once; refreshing evaluates the sources again.

DayBreach AI Explanation

Verified against sources

Out-of-bounds Write Vulnerability in parted for CVE-2026-89085

Sources read

Source agreement

Tam uyum

Evidence confidence

%55

Short explanation

A heap-based buffer overflow can occur in parted when processing a specially crafted FAT32 filesystem due to an integer calculation error during buffer allocation.

Why does it matter?

If a local attacker entices a user or automated service to open a malicious filesystem image, it can lead to an application crash resulting in a Denial of Service (DoS) or potential memory corruption.

What should be done?

Follow official vendor advisories
Avoid opening untrusted filesystem images
Restrict automated services from processing untrusted images

Chain of evidence and sources2 verified claims

parted bileşeninde özel olarak hazırlanmış FAT32 dosyası işlenirken yığın tabanlı bir arabelik taşması oluşabilir.

S0 · daybreach-canonical S1 · nvd

Yerel bir saldırgan, kullanıcıyı veya servisi kötü amaçlı imajı açmaya yönlendirerek Hizmet Dışı Bırakılma (DoS) tetikleyebilir.

S0 · daybreach-canonical S1 · nvd

Show the technical text from the sources

A flaw was found in parted. A heap-based buffer overflow can occur when processing a specially crafted FAT32 filesystem due to an integer calculation error during buffer allocation. A local attacker could exploit this by enticing a user or automated service to open a malicious filesystem image, resulting in an application crash leading to a Denial of Service (DoS) or potential memory corruption.

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

CWE: CWE-787

Explanation produced with the local gemini-flash-lite-latest model. Numerical metrics and the KEV, patch and exploit statuses are not determined by AI.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2026-89085 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

ID	VENDOR	PRODUCT	ACTION
1	Red Hat	Red Hat Enterprise Linux 10	View
2	Red Hat	Red Hat Enterprise Linux 6	View
3	Red Hat	Red Hat Enterprise Linux 7	View
4	Red Hat	Red Hat Enterprise Linux 8	View
5	Red Hat	Red Hat Enterprise Linux 9	View
6	debian	parted (sid)	View
7	debian	parted (forky)	View
8	debian	parted (trixie)	View
9	debian	parted (bookworm)	View
10	Ubuntu	parted (trusty)	View
11	Ubuntu	parted (xenial)	View
12	Ubuntu	parted (bionic)	View
13	Ubuntu	parted (focal)	View
14	Ubuntu	parted (jammy)	View
15	Ubuntu	parted (noble)	View
16	Ubuntu	parted (resolute)	View
17	Ubuntu	parted (upstream)	View

Total affected vendors: 3|Products: 17

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCORE	VERSION	SEVERITY	VECTOR	SOURCE
6.6	CVSS V31	MEDIUM	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H	NVD
6.6	CVSS V3_1	MEDIUM	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H	CVE CNA

Patch and Remediation Guide

Solution & Remediation Advisory

Partial patch

2 düzeltme kanıtı bulundu; en az 10 ürün veya sürüm hâlâ etkileniyor ya da inceleniyor.

debianparted (sid)3.8-2

Debian sid: 3.8-2

debianparted (forky)3.8-2

Debian forky: 3.8-2

Confirm the affected product and version against the source evidence above.

Restrict access to internet-facing services and apply network segmentation.

Apply the official update named in the evidence only to the matching product and version.

Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-89085 is associated with the following CWEs:

CWE-787: Out-of-bounds Write

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-89085 weaknesses.

CAPEC-66: SQL Injection CAPEC-126: Path Traversal CAPEC-28: OS Command Injection

Attack Vector and Accessibility

ExposureYerel erişim

PermissionsGerekmiyor

UserGerekiyor

Official Sources and Advisories

https://access.redhat.com/security/cve/CVE-2026-89085vendor-advisory RHBZ#2466034vendor-advisory https://security-tracker.debian.org/tracker/CVE-2026-89085vendor-advisory https://www.cve.org/CVERecord?id=CVE-2026-89085vendor-advisory https://alioth-lists.debian.net/pipermail/parted-devel/2026-September/006032.htmlvendor-advisory

CVSS Vector Radar Chart

6.6 / 10

Vulnerability Scoring Details

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

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredNone required

User Interaction—

Confidentiality (Gizlilik)Low

Integrity (Bütünlük)Low

Availability (Erişilebilirlik)High

Kısmi yama

2 düzeltme kanıtı bulundu; en az 10 ürün veya sürüm hâlâ etkileniyor ya da inceleniyor.

Follow the vendor

Red Hat

debian

Ubuntu

Weakness Type (CWE & CAPEC)

CWE-787

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