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Vulnerability record · CVE-2016-1951 · published 7 August 2016

CVE-2016-1951: Mozilla netscape portable runtime integer overflow vulnerability

Mozilla · Netscape Portable Runtime

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.

8.6 CVSS 3.0 High EPSS 3.1% · top 12.6% CWE-190 · Integer overflow
8.6CVSS 3.0 base score, v2 7.5
3.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
12References
17 Jun 2026Last modified by NVD

Description

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.

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.securityfocus.com/bid/92385
http://www.securitytracker.com/id/1036590
http://www.ubuntu.com/usn/USN-3023-1
https://bugzilla.mozilla.org/show_bug.cgi?id=1174015 Issue Tracking
https://groups.google.com/forum/message/raw?msg=mozilla.dev.tech.nspr/dV4MyMsg6jw/hhWcXOgJDQAJ Mailing List
https://hg.mozilla.org/projects/nspr/rev/96381e3aaae2
http://www.securityfocus.com/bid/92385
http://www.securitytracker.com/id/1036590
http://www.ubuntu.com/usn/USN-3023-1
https://bugzilla.mozilla.org/show_bug.cgi?id=1174015 Issue Tracking
https://groups.google.com/forum/message/raw?msg=mozilla.dev.tech.nspr/dV4MyMsg6jw/hhWcXOgJDQAJ Mailing List
https://hg.mozilla.org/projects/nspr/rev/96381e3aaae2

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2016-1951), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.