CVE-2025-15536
Description
A weakness has been identified in BYVoid OpenCC up to 1.1.9. This vulnerability affects the function opencc::MaxMatchSegmentation of the file src/MaxMatchSegmentation.cpp. This manipulation causes heap-based buffer overflow. The attack is restricted to local execution. The exploit has been made available to the public and could be used for attacks. Patch name: 345c9a50ab07018f1b4439776bad78a0d40778ec. To fix this issue, it is recommended to deploy a patch.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
SUSE Affected 1 release
| Version | Status | Fixed in |
|---|---|---|
| — | Affected | — |
Debian Mixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Affected | — |
| sid | Fixed | 1.1.9+ds1-4 |
| forky | Fixed | 1.1.9+ds1-4 |
| bullseye | Affected | — |
| bookworm | Affected | — |
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| npm | opencc | <1.2.0 | 1.2.0 |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| byvoid | open_chinese_convert | {"endIncluding":"1.1.9"} | |
References
- https://github.com/BYVoid/OpenCC/
- https://github.com/BYVoid/OpenCC/commit/345c9a50ab07018f1b4439776bad78a0d40778ec
- https://github.com/BYVoid/OpenCC/issues/997
- https://github.com/BYVoid/OpenCC/pull/1005
- https://github.com/oneafter/1222/blob/main/repro
- https://vuldb.com/?ctiid.341708
- https://vuldb.com/?id.341708
- https://vuldb.com/?submit.733347
- https://www.suse.com/security/cve/CVE-2025-15536.html
- https://nvd.nist.gov/vuln/detail/CVE-2025-15536
- https://github.com/BYVoid/OpenCC
- https://security-tracker.debian.org/tracker/CVE-2025-15536
CWEs
CWE-119 CWE-122 CWE-787
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.