The demangle_template_value_parm and do_hpacc_template_literal functions in cplus-dem.c…
Priority LOW 28CWE-125Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Will not fix Red Hat: no fix planned
Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-125 and the CVSS impact.
Summary
The demangle_template_value_parm and do_hpacc_template_literal functions in cplus-dem.c in libiberty allow remote attackers to cause a denial of service (out-of-bounds read and crash) via a crafted binary.
Why it matters now
EPSS 0.01674 76th percentileScored 2026-11-07
Fix Will not fix Red Hat: no fix planned
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 5 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Will not fix |
Timeline
- 2026-10-02 Threatist record created from CVE-2016-4493
- 2026-10-03 Alias added: GHSA-c3rq-h4g9-3568
References
More GNU Libiberty vulnerabilities
- TI-2016-02031 Integer overflow in the string_appends function in cplus-dem.c in libiberty allows remote… CVSS 3.0HIGH 7.8
- TI-2016-05262 The demangler in GNU Libiberty allows remote attackers to cause a denial of service… CVSS 3.0HIGH 7.5
- TI-2012-03037 Multiple integer overflows in the (1) _objalloc_alloc function in objalloc.c and (2)… CVSS 2.0MEDIUM 5.0
- TI-2016-03862 The d_print_comp function in cp-demangle.c in libiberty allows remote attackers to cause… CVSS 3.0MEDIUM 5.5
- TI-2016-03861 Integer overflow in cp-demangle.c in libiberty allows remote attackers to cause a denial… CVSS 3.0MEDIUM 5.5
- TI-2016-03860 Integer overflow in the gnu_special function in libiberty allows remote attackers to… CVSS 3.0MEDIUM 5.5
Sources
- CVE-2016-4493 · CVE Program
- CVE-2016-4493 · NVD
- FIRST EPSS
- GHSA-c3rq-h4g9-3568 · GitHub Advisory Database · CC BY 4.0
- CVE-2016-4493 · Red Hat security data · CC BY 4.0
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