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CVE-2026-111678

Status: AnalyzedMedium (4.8)—
Severity4.8Medium · CVSS 4.0
Exploitation probability0.13 %higher than 2% of CVEs
Active exploitationNonot in the CISA catalog
Public exploitNot knownno public code found

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

Base score
4.8
Version
4.0
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/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

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days
0.13 %
Percentile among all scored CVEs
2
Score date
10/20/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

ATT&CK techniques

How this vulnerability is exploited and what the attacker gains, in MITRE ATT&CK terms.

El vector es AV:L con UI:P y el texto indica que el atacante aporta un .doc manipulado que la víctima abre; el impacto descrito es un bloqueo de antiword por lectura fuera de límites.

Inferred by our analysis agent from the official description, CVSS vector and CWE, and checked by a supervisor. May contain errors.

ATT&CK mitigations that cover these techniques

Filter Network TrafficApplication Isolation and SandboxingExploit ProtectionUpdate Software

Affected technologies (1)

Antiword Project — Antiword

CWEs

References

Show 4 references

Raw JSON (NVD)

Show
{
  "id": "CVE-2026-111678",
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      "sourceIdentifier": "disclosure@vulncheck.com"
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  "metrics": {
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          "valueDensity": "NOT_DEFINED",
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          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
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          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED"
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  "affected": [
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      "affectedData": [
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          "vendor": "Adri van Os",
          "product": "antiword",
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              "version": "0",
              "versionType": "custom",
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  "published": "2026-10-16T18:17:50.627",
  "references": [
    {
      "url": "https://github.com/rsdoiel/antiword/blob/fe4b579067122a2d9d62647efb1ee7cfe3ca92bb/prop8.c#L1461-L1474",
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      "tags": [
        "Product"
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    {
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      "tags": [
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      "url": "https://www.vulncheck.com/advisories/antiword-through-0.37-stack-out-of-bounds-read-via-prop8-c-fkp-parsing",
      "tags": [
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      "lang": "en",
      "value": "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."
    }
  ],
  "lastModified": "2026-10-20T18:17:19.707",
  "configurations": [
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              "versionEndIncluding": "0.37"
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  "sourceIdentifier": "disclosure@vulncheck.com"
}