CVE-2011-2939
Off-by-one error in the decode_xs function in Unicode/Unicode.xs in the Encode module before 2.44, as used in Perl before 5.15.6, might allow context-dependent attackers to cause a denial of servic...
Affects 2 products across 2 vendors.
This vulnerability was disclosed in 2012. A medium severity vulnerability affects Dan Kogai systems (CVE-2011-2939). No public exploit code is currently available. Isolate affected systems if patching is not feasible.
BSID: BS-2012-GLOBAL-316351-M • Model: rule-based-v1 • Confidence: MEDIUM
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| CVE ID | CVE-2011-2939 |
|---|---|
| BSID | BS-2012-GLOBAL-316351-M BreachSpider Global ID |
| CVSS Vector | AV:N/AC:H/Au:N/C:P/I:P/A:P |
| Published | 2012-01-13 |
| Last Modified | 2026-04-29 |
| ICS Relevance | 0% |
| Weakness (CWE) | |
| Source | NVD |
Off-by-one error in the decode_xs function in Unicode/Unicode.xs in the Encode module before 2.44, as used in Perl before 5.15.6, might allow context-dependent attackers to cause a denial of service (memory corruption) via a crafted Unicode string, which triggers a heap-based buffer overflow.
Source: NIST NVD / MITRE CVE Database
Vulnerability details: Off-by-one error in the decode_xs function in Unicode/Unicode.xs in the Encode module before 2.44, as used in Perl before 5.15.6, might allow context-dependent attackers to cause a denial of service (memory corruption) via a crafted Unicode string, which triggers a heap-based buffer overflow. CVSS vector: AV:N/AC:H/Au:N/C:P/I:P/A:P.
Exploitation Likelihood: MINIMAL
No official vendor advisory link on record. See the CVE record →
| CISA known-exploited | Not in KEV catalog |
|---|---|
| Public Exploit | Not confirmed |
| PoC Code | Not confirmed |
AI Enrichment Record — provenance & audit hash
| Model | rule-based-v1 |
|---|---|
| Confidence | MEDIUM |
| Enriched At | 2026-05-24 |
| SHA-512 Audit Hash | 401d6e64a2455c2cc4c3d1f9d607cf4c2cd3cfea282dcd53d7362ba91018f11935c2491de7038987f3f2888942fdcd928b64563bf67dbae1b44394cdb36eaed9 |
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