CVE-2026-112281Proof of concept (PoC) published · CISA

libaribb24 through 1.0.3 Stack Buffer Overflow via decoder_handle_csi

CVSS score

6.9

EPSS probability

—

Risk score

0.7

Published

9 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

CVE-2026-112281: libaribb24 Stack-Based Buffer Overflow Vulnerability

Sources read

Source agreement

0/2

Evidence confidence

%44

Short explanation

libaribb24 versions contain a stack-based buffer overflow vulnerability in decoder_handle_csi() within src/decoder.c. Unbounded CSI parameter bytes allow writing past a fixed 256-entry array.

Why does it matter?

Attackers can embed caption statements with CSI introducers in media files or broadcast streams to crash FFmpeg or VLC or corrupt the return address.

What should be done?

Follow vendor advisories as patch status is unknown
Implement input validation for media streams and files

Note on uncertainty

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

Chain of evidence and sources2 verified claims

libaribb24 1.0.3 ve önceki sürümler, decoder_handle_csi fonksiyonunda yığın tabanlı bir tampon taşması açığı barındırmaktadır.

S0 · daybreach-canonical S1 · cvelist S2 · nvd

Saldırganlar medya dosyalarına veya yayın akışlarına gömülü 256'dan fazla CSI parametre baytı ekleyerek dönüş adresini bozabilir veya çökme yaratabilir.

S0 · daybreach-canonical S1 · cvelist S2 · nvd

Show the technical text from the sources

libaribb24 (aribb24) through 1.0.3 contains a stack-based buffer overflow vulnerability in decoder_handle_csi() in src/decoder.c that allows attackers to write past a fixed 256-entry array by supplying unbounded CSI parameter bytes. Attackers can embed a caption statement with a CSI introducer and over 256 parameter bytes in media files or broadcast streams to crash FFmpeg or VLC or corrupt the return address.

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

CWE: CWE-121

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-2026-112281 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

ID	VENDOR	PRODUCT	ACTION
1	nkoriyama	aribb24	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
6.9	CVSS V4_0	MEDIUM	CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N	CVE CNA
6.9	CVSS V40	MEDIUM	CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/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
6.1	CVSS V3_1	MEDIUM	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H	CVE CNA
6.1	CVSS V31	MEDIUM	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H	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-2026-112281 is associated with the following CWEs:

CWE-121: Common Weakness Enumeration Entry CWE-121

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-2026-112281 weaknesses.

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

Attack Vector and Accessibility

ExposureYerel erişim

PermissionsGerekmiyor

User—

Official Sources and Advisories

https://hackmd.io/@haindpwn/aribb24-caption-data-unit-and-csi-oob-writevendor-advisory https://github.com/nkoriyama/aribb24/blob/v1.0.3/src/decoder.cvendor-advisory VulnCheck Advisory: libaribb24 through 1.0.3 Stack Buffer Overflow via decoder_handle_csivendor-advisory https://hackmd.io/@haindpwn/cve-2026-112280-112281-aribb24-caption-data-unit-and-csi-oob-writenvd

CVSS Vector Radar Chart

6.9 / 10

Vulnerability Scoring Details

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

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredNone required

User InteractionP

Confidentiality (Gizlilik)Low

Integrity (Bütünlük)P

Availability (Erişilebilirlik)High

Yama durumu bilinmiyor

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

Follow the vendor

nkoriyama

Weakness Type (CWE & CAPEC)

CWE-121

Similar Vulnerabilities

6.9

CVE-2026-112280libaribb24 (aribb24) through 1.0.3 Heap Buffer Overflow via parse_data_unit_statement_body

Vendornkoriyama Productaribb24

Patch status unknown9 h ago

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