CVE-2026-109828Proof of concept (PoC) published · CISA

libsndfile WAV Parsing wavlike.c wavlike_subchunk_parse uninitialized variable

CVSS score

5.3

EPSS probability

—

Risk score

0.5

Published

17 h 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.

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Vulnerability description

CVE AI research

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DayBreach AI Explanation

Verified against sources

libsndfile Uninitialized Variable Vulnerability

Sources read

Source agreement

0/2

Evidence confidence

%44

Short explanation

A vulnerability in libsndfile up to version 1.2.2 affects the wavlike_subchunk_parse function within the WAV parsing component. This issue results in the use of an uninitialized variable and enables remote exploitation.

Why does it matter?

The presence of remote exploitation capabilities and a public exploit allows potential attackers to leverage the flaw against vulnerable deployments.

What should be done?

Follow official vendor advisories
Monitor reported issue logs on the project
Keep the affected component updated

Note on uncertainty

2 alanda kaynak uyuşmazlığı var. DayBreach bu değerleri saklamadı; kaynak karşılaştırması aşağıda gösteriliyor.

Chain of evidence and sources3 verified claims

libsndfile 1.2.2 ve önceki sürümleri, src/wavlike.c dosyasındaki wavlike_subchunk_parse fonksiyonunda bir açıklıktan etkilenmektedir.

S0 · daybreach-canonical S1 · cvelist S2 · nvd

Açıklık için kamuya açık bir istismar mevcuttur ve proje erken aşamada bilgilendirilmiştir.

S0 · daybreach-canonical S1 · cvelist

Kaynaklar arasında CVSS taban puanı konusunda farklılıklar bulunmakta olup, değerler 5.3 ve 4.3 olarak bildirilmiştir.

S1 · cvelist S2 · nvd

Show the technical text from the sources

A vulnerability was found in libsndfile up to 1.2.2. This issue affects the function wavlike_subchunk_parse of the file src/wavlike.c of the component WAV Parsing. Performing a manipulation results in use of uninitialized variable. Remote exploitation of the attack is possible. The exploit has been made public and could be used. The project was informed of the problem early through an issue report but has not responded yet.

CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P

CWE: CWE-457, CWE-453

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-2026-109828 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

ID	VENDOR	PRODUCT	ACTION
1	n/a	libsndfile	View

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 V4_0	MEDIUM	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P	CVE CNA
5.0	CVSS V2	—	AV:N/AC:L/Au:N/C:P/I:N/A:N	NVD
5.0	CVSS V2_0	—	AV:N/AC:L/Au:N/C:P/I:N/A:N/E:POC/RL:ND/RC:C	CVE CNA
4.3	CVSS V31	MEDIUM	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N	NVD
4.3	CVSS V3_1	MEDIUM	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:P/RL:X/RC:C	CVE CNA
4.3	CVSS V3_0	MEDIUM	CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:P/RL:X/RC:C	CVE CNA
2.1	CVSS V40	LOW	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/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

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

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-2026-109828 is associated with the following CWEs:

CWE-457: Common Weakness Enumeration Entry CWE-457 CWE-453: Common Weakness Enumeration Entry CWE-453

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-2026-109828 weaknesses.

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

Attack Vector and Accessibility

ExposureAğ üzerinden

PermissionsGerekmiyor

User—

Official Sources and Advisories

VDB-417466 | libsndfile WAV Parsing wavlike.c wavlike_subchunk_parse uninitialized variablevendor-advisory VDB-417466 | CTI Indicators (IOB, IOC, IOA)vendor-advisory CVE-2026-109828 | CVE Analysis and Reportvendor-advisory Submit #1002209 | libsndfile b9103bd48b6c8fb517ae737fe3baee0c718b804c Use of Uninitialized Resourcevendor-advisory https://github.com/libsndfile/libsndfile/issues/1169vendor-advisory https://github.com/libsndfile/libsndfile/vendor-advisory

CVSS Vector Radar Chart

5.3 / 10

Vulnerability Scoring Details

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone required

User InteractionP

Confidentiality (Gizlilik)Low

Integrity (Bütünlük)P

Availability (Erişilebilirlik)None

Yama durumu bilinmiyor

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

Follow the vendor

n/a

Weakness Type (CWE & CAPEC)

CWE-457 CWE-453

Similar Vulnerabilities

10.0

CVE-2015-3306 Actively exploited

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