CVE-2026-111678

Antiword through 0.37 Stack Out-of-Bounds Read via prop8.c FKP Parsing

CVSS score

4.8

EPSS probability

%0.1

Risk score

0.0

Published

1 d 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

CVE AI research

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

DayBreach AI Explanation

Verified against sources

Antiword prop8.c Stack Out-of-Bounds Read Vulnerability

Sources read

Source agreement

0/2

Evidence confidence

%37

Short explanation

Antiword through 0.37 contains a stack out-of-bounds read vulnerability in vGet8PapInfo and vGet8ChrInfo within prop8.c.

Why does it matter?

A crafted .doc file can trigger reading past the stack buffer, causing crashes or style parsing corruption.

What should be done?

Follow the vendor advisory for updates

Note on uncertainty

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

Chain of evidence and sources2 verified claims

Antiword sürümleri 0.37 ve öncesi, prop8.c dosyasında yığın sınır dışı okuma zafiyetine karşı savunmasızdır.

S0 · daybreach-canonical S1 · cvelist

Zafiyet, FKP çalıştırma sayılarının ve grpprl ofsetlerinin sınırlandırılmamasından kaynaklanır.

S0 · daybreach-canonical S1 · cvelist S2 · nvd

Show the technical text from the sources

Antiword through 0.37 contains a stack out-of-bounds read vulnerability in vGet8PapInfo and vGet8ChrInfo in prop8.c because FKP run counts and grpprl offsets are not bounded. Attackers can supply a crafted .doc file with malicious FKP pages to read past the 512-byte stack buffer, crashing antiword or corrupting style parsing.

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

CWE: CWE-125

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-2026-111678 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

ID	VENDOR	PRODUCT	ACTION
1	Adri van Os	antiword	View
2	debian	antiword (sid)	View
3	debian	antiword (forky)	View
4	debian	antiword (trixie)	View
5	debian	antiword (bookworm)	View

Total affected vendors: 2|Products: 5

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
4.8	CVSS V40	MEDIUM	CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/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
4.8	CVSS V4_0	MEDIUM	CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N	CVE CNA
3.3	CVSS V31	LOW	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L	NVD
3.3	CVSS V3_1	LOW	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L	CVE CNA

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-2026-111678 is associated with the following CWEs:

CWE-125: Out-of-bounds Read

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-2026-111678 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/antiword-word8-plcflst-count-and-fkp-run-oob-readvendor-advisory https://github.com/rsdoiel/antiword/blob/fe4b579067122a2d9d62647efb1ee7cfe3ca92bb/prop8.c#L997-L1022vendor-advisory https://github.com/rsdoiel/antiword/blob/fe4b579067122a2d9d62647efb1ee7cfe3ca92bb/prop8.c#L1461-L1474vendor-advisory VulnCheck Advisory: Antiword through 0.37 Stack Out-of-Bounds Read via prop8.c FKP Parsingvendor-advisory https://security-tracker.debian.org/tracker/CVE-2026-111678vendor-advisory

CVSS Vector Radar Chart

4.8 / 10

Vulnerability Scoring Details

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

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredNone required

User InteractionP

Confidentiality (Gizlilik)Low

Integrity (Bütünlük)P

Availability (Erişilebilirlik)Low

Yama durumu bilinmiyor

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

Follow the vendor

Adri van Os

debian

Weakness Type (CWE & CAPEC)

CWE-125

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