Security readout for executives and security teams
Plain-English summary
OpenCC 1.0.5 can crash when it reads a specially crafted dictionary file. The documented impact is denial of service, not data theft or code execution. Business risk depends on whether systems process untrusted .ocd dictionary files or allow users, partners, or automation to supply them.
Executive priority
Treat this as a targeted availability risk. Prioritize remediation where OpenCC supports customer-facing, automated, or high-volume workflows that can receive external dictionary files. Internal-only static dictionary use is lower urgency but should still be tracked.
Technical view
CVE-2018-16982 affects Open Chinese Convert (OpenCC) 1.0.5. BinaryDict::NewFromFile in BinaryDict.cpp may read out-of-bounds keyOffset and valueOffset values from a crafted .ocd file, causing a segmentation fault and denial of service.
Likely exposure
Exposure is most likely in applications, services, or batch pipelines using OpenCC 1.0.5 that load .ocd dictionary files from untrusted or semi-trusted sources.
Exploitation context
The source bundle does not show KEV listing, active exploitation, CVSS, CWE, or a named patch. Exploitation evidence is limited to the public issue and CVE description describing a crafted .ocd file causing a crash.
Researcher notes
The public data is sparse but specific: OpenCC 1.0.5, BinaryDict::NewFromFile, crafted .ocd file, out-of-bounds offsets, segmentation fault. No exploit status, CVSS, CWE, affected CPE, or fixed release is provided in the bundle.
Mitigation direction
- Inventory systems and dependencies for OpenCC 1.0.5 usage.
- Do not process untrusted .ocd dictionary files with affected OpenCC builds.
- Restrict who can upload, replace, or configure OpenCC dictionary files.
- Check OpenCC upstream guidance for fixed versions or official remediation.
- Monitor OpenCC-dependent services for segmentation faults and repeated restarts.
Validation and detection
- Confirm whether OpenCC 1.0.5 exists in application dependencies or system packages.
- Map all workflows that load .ocd dictionary files.
- Determine whether any .ocd files originate from users, partners, or external automation.
- Review logs for OpenCC-related segmentation faults or unexplained conversion service crashes.
- Verify compensating controls block untrusted dictionary file changes.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-2018-16982 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/BYVoid/OpenCC/issues/303CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.