CVE-2026-112055: Out-of-bounds Read in wvWare wv
Description
wvWare wv versions up to 1.2.9 contain a stack-based out-of-bounds read vulnerability triggered by an unvalidated FKP run count in functions wvGetPAPX_FKP and wvGetCHPX_FKP. A crafted .doc file with a large crun value can cause the application to read beyond a 512-byte stack buffer, potentially crashing applications such as AbiWord. The vulnerability has a CVSS 4.0 score of 6.8, indicating medium severity.
CVSS v4.0
Score 6.8medium
Affected software
wvWare
wv
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-112055 is a stack-based out-of-bounds read vulnerability in wvWare wv through version 1.2.9. The flaw exists in the functions wvGetPAPX_FKP and wvGetCHPX_FKP due to an unvalidated FKP run count (crun) value. An attacker can supply a specially crafted .doc file with a large crun value, causing the program to read kilobytes beyond the intended 512-byte stack buffer. This can lead to application crashes, such as in AbiWord, but no further exploitation details are provided.
Potential Impact
The vulnerability allows reading beyond the allocated stack buffer, which can cause application crashes (denial of service). There is no indication of code execution or data leakage beyond the crash impact. The affected software includes wvWare wv up to version 1.2.9 and applications using it, such as AbiWord.
Mitigation Recommendations
No patch or official fix information is provided in the available data. Users should monitor the vendor advisory for updates and avoid opening untrusted .doc files with affected versions of wvWare wv. Since this is a local attack vector requiring user interaction (opening a crafted file), exercising caution with document sources is recommended.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-10-18T11:54:42.475Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6ad4bcc12cdf04f656692486
Added to database: 10/18/2026, 12:34:09 UTC
Last enriched: 10/18/2026, 12:48:36 UTC
Last updated: 10/18/2026, 20:11:56 UTC
Views: 7
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