Multiple integer overflows in io/prprf.c in Mozilla Netscape Portable Runtime (NSPR)…
Priority MEDIUM 43CWE-190Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Low · Low · 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.
Summary
Multiple integer overflows in io/prprf.c in Mozilla Netscape Portable Runtime (NSPR) before 4.12 allow remote attackers to cause a denial of service (buffer overflow) or possibly have unspecified other impact via a long string to a PR_*printf function.
Why it matters now
EPSS 0.03126 87th 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: Moderate. 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-2016-1951
- 2026-10-03 Alias added: GHSA-2xc9-w6jv-x92w
References
More Mozilla Netscape Portable Runtime vulnerabilities
- TI-2014-01198 Mozilla Netscape Portable Runtime (NSPR) before 4.10.6 allows remote attackers to execute… CVSS 2.0HIGH 10.0
- TI-2013-04793 Integer overflow in the PL_ArenaAllocate function in Mozilla Netscape Portable Runtime… CVSS 2.0HIGH 7.5
Sources
- CVE-2016-1951 · CVE Program
- CVE-2016-1951 · NVD
- FIRST EPSS
- GHSA-2xc9-w6jv-x92w · GitHub Advisory Database · CC BY 4.0
- CVE-2016-1951 · Red Hat security data · CC BY 4.0
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