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4 vulnerabilities by Adri van Os
CVE-2026-111678 (GCVE-0-2026-111678)
Vulnerability from nvd – Published: 2026-10-16 17:39 – Updated: 2026-10-18 12:26 Unsupported When Assigned
VLAI
EPSS
VEX
Title
Antiword through 0.37 Stack Out-of-Bounds Read via prop8.c FKP Parsing
Summary
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.
Severity
CWE
- CWE-125 - Out-of-bounds Read
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://hackmd.io/@haindpwn/antiword-word8-plcfls… | third-party-advisory |
| https://github.com/rsdoiel/antiword/blob/fe4b5790… | technical-description |
| https://github.com/rsdoiel/antiword/blob/fe4b5790… | technical-description |
| https://www.vulncheck.com/advisories/antiword-thr… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Adri van Os | antiword |
Affected:
0 , ≤ 0.37
(custom)
|
Date Public
2026-10-16 00:00
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CVE-2026-111677 (GCVE-0-2026-111677)
Vulnerability from nvd – Published: 2026-10-16 17:39 – Updated: 2026-10-18 12:26 Unsupported When Assigned
VLAI
EPSS
VEX
Title
Antiword through 0.37 Heap Out-of-Bounds Read via vGet8LstInfo in prop8.c
Summary
Antiword through 0.37 contains a heap out-of-bounds read vulnerability in vGet8LstInfo in prop8.c caused by an inverted bounds check on the PlcfLst record count. Attackers can supply a crafted Word 8 .doc file claiming up to 0xffff LSTF records in a tiny buffer, causing reads past the heap allocation that crash the process.
Severity
5.5 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-16 18:30 UTC
CWE
- CWE-125 - Out-of-bounds Read
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://hackmd.io/@haindpwn/antiword-word8-plcfls… | third-party-advisory |
| https://github.com/rsdoiel/antiword/blob/fe4b5790… | technical-description |
| https://www.vulncheck.com/advisories/antiword-thr… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Adri van Os | antiword |
Affected:
0 , ≤ 0.37
(custom)
|
Date Public
2026-10-16 00:00
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CVE-2026-111678 (GCVE-0-2026-111678)
Vulnerability from cvelistv5 – Published: 2026-10-16 17:39 – Updated: 2026-10-18 12:26 Unsupported When Assigned
VLAI
EPSS
VEX
Title
Antiword through 0.37 Stack Out-of-Bounds Read via prop8.c FKP Parsing
Summary
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.
Severity
CWE
- CWE-125 - Out-of-bounds Read
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://hackmd.io/@haindpwn/antiword-word8-plcfls… | third-party-advisory |
| https://github.com/rsdoiel/antiword/blob/fe4b5790… | technical-description |
| https://github.com/rsdoiel/antiword/blob/fe4b5790… | technical-description |
| https://www.vulncheck.com/advisories/antiword-thr… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Adri van Os | antiword |
Affected:
0 , ≤ 0.37
(custom)
|
Date Public
2026-10-16 00:00
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CVE-2026-111677 (GCVE-0-2026-111677)
Vulnerability from cvelistv5 – Published: 2026-10-16 17:39 – Updated: 2026-10-18 12:26 Unsupported When Assigned
VLAI
EPSS
VEX
Title
Antiword through 0.37 Heap Out-of-Bounds Read via vGet8LstInfo in prop8.c
Summary
Antiword through 0.37 contains a heap out-of-bounds read vulnerability in vGet8LstInfo in prop8.c caused by an inverted bounds check on the PlcfLst record count. Attackers can supply a crafted Word 8 .doc file claiming up to 0xffff LSTF records in a tiny buffer, causing reads past the heap allocation that crash the process.
Severity
5.5 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-16 18:30 UTC
CWE
- CWE-125 - Out-of-bounds Read
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://hackmd.io/@haindpwn/antiword-word8-plcfls… | third-party-advisory |
| https://github.com/rsdoiel/antiword/blob/fe4b5790… | technical-description |
| https://www.vulncheck.com/advisories/antiword-thr… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Adri van Os | antiword |
Affected:
0 , ≤ 0.37
(custom)
|
Date Public
2026-10-16 00:00
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"name": "VulnCheck Advisory: Antiword through 0.37 Heap Out-of-Bounds Read via vGet8LstInfo in prop8.c",
"tags": [
"third-party-advisory"
],
"url": "https://www.vulncheck.com/advisories/antiword-through-0.37-heap-out-of-bounds-read-via-vget8lstinfo-in-prop8-c"
}
],
"tags": [
"unsupported-when-assigned"
],
"title": "Antiword through 0.37 Heap Out-of-Bounds Read via vGet8LstInfo in prop8.c",
"x_generator": {
"engine": "vulncheck-endgame"
}
}
},
"cveMetadata": {
"assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"assignerShortName": "VulnCheck",
"cveId": "CVE-2026-111677",
"datePublished": "2026-10-16T17:39:36.663Z",
"dateReserved": "2026-10-16T14:31:18.550Z",
"dateUpdated": "2026-10-18T12:26:10.819Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}