CVE-2026-15520

Memory buffer overflow

CVSS score

5.3

EPSS probability

%0.2

Risk score

0.0

Published

3 mo ago

Overview Public Exploits (0)Newsroom Vulnerability Timeline

Patch status has not yet been verified

Resmî kaynaklarda yeterli kanıt bulunamadı. Bu sonuç “yama yok” anlamına gelmez.

Impact on My Inventory

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Vulnerability description

DayBreach CVE AI Research

CVE-2026-15520 has vendor, distribution, patch and security-source records on file. We can compare them and prepare an explanation linked to the evidence.

A vulnerability was determined in GNU LibreDWG 0.13.4-154-g0b573035. This impacts the function decompress_R2004_section of the file src/decode.c of the component R2004 Section Decompression. Executing a manipulation can lead to heap-based buffer overflow. The attack requires local access. The exploit has been publicly disclosed and may be utilized. Upgrading to version 0.14.8396 will fix this issue. This patch is called 3d0f9fc2eddbd6579c99af3111c37c98f03475d0. You should upgrade the affected component.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2026-15520 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

ID	VENDOR	PRODUCT	ACTION

Total affected vendors: 1|Products: 1

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
5.3	CVSS V31	MEDIUM	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L	NVD
4.3	CVSS V2	—	AV:L/AC:L/Au:S/C:P/I:P/A:P	NVD
1.9	CVSS V40	LOW	CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X	NVD

Patch and Remediation Guide

Solution & Remediation Advisory

Patch status unknown

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

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

Until a patch is confirmed, follow the vendor advisory; do not read an unknown status as “no patch”.

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-2026-15520 is associated with the following CWEs:

CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer CWE-122: Common Weakness Enumeration Entry CWE-122

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-2026-15520 weaknesses.

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

Attack Vector and Accessibility

ExposureYerel erişim

PermissionsLow

UserGerekmiyor

Official Sources and Advisories

https://github.com/HackC0der/CVE-Repos/blob/main/libredwg/libredwg_0b57303_heap_overflow_decompress_R2004_section.dwgnvd https://github.com/LibreDWG/libredwg/commit/3d0f9fc2eddbd6579c99af3111c37c98f03475d0nvd https://github.com/LibreDWG/libredwg/issues/1251nvd https://github.com/LibreDWG/libredwg/releases/tag/0.14.8396nvd https://github.com/advisories/GHSA-qg2f-8389-w95jnvd https://vuldb.com/cve/CVE-2026-15520nvd https://vuldb.com/submit/851190nvd https://vuldb.com/vuln/377849nvd https://vuldb.com/vuln/377849/ctinvd https://www.gnu.org/nvd

CVSS Vector Radar Chart

5.3 / 10

Vulnerability Scoring Details

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

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredLow privileges

User InteractionNone required

Confidentiality (Gizlilik)Low

Integrity (Bütünlük)None

Availability (Erişilebilirlik)Low

Yama durumu bilinmiyor