CVE-2017-5461
Mozilla Network Security Services (NSS) before 3.21.4, 3.22.x through 3.28.x before 3.28.4, 3.29.x before 3.29.5, and 3.30.x before 3.30.1 allows remote attackers to cause a denial of service (out-of-bounds write) or possibly have unspecified other…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (4.70%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Mozilla Network Security Services (NSS) before 3.21.4, 3.22.x through 3.28.x before 3.28.4, 3.29.x before 3.29.5, and 3.30.x before 3.30.1 allows remote attackers to cause a denial of service (out-of-bounds write) or possibly have unspecified other impact by leveraging incorrect base64 operations.
- CVSS 3.0
- 9.8 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 4.70% probability · 92th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-787
- Affected
- mozilla/network security services
- Source
- security@mozilla.org
EPSS 4.7% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://www.debian.org/security/2017/dsa-3831Patch
- http://www.debian.org/security/2017/dsa-3872Patch
- http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.htmlPatch
- http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.htmlPatch
- http://www.securityfocus.com/bid/98050Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1038320Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2017:1100Patch
- https://access.redhat.com/errata/RHSA-2017:1101Patch
- https://access.redhat.com/errata/RHSA-2017:1102Patch
- https://access.redhat.com/errata/RHSA-2017:1103Patch
- https://bugzilla.mozilla.org/show_bug.cgi?id=1344380Issue Tracking, Permissions Required
- https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.21.4_release_notesRelease Notes, Vendor Advisory
- https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.28.4_release_notesRelease Notes, Vendor Advisory
- https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.29.5_release_notesRelease Notes, Vendor Advisory
- https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.30.1_release_notesRelease Notes, Vendor Advisory
- https://security.gentoo.org/glsa/201705-04Third Party Advisory
- https://www.mozilla.org/en-US/security/advisories/mfsa2017-10/#CVE-2017-5461Vendor Advisory
- https://www.mozilla.org/en-US/security/advisories/mfsa2017-11/#CVE-2017-5461Vendor Advisory
- https://www.mozilla.org/en-US/security/advisories/mfsa2017-12/#CVE-2017-5461Vendor Advisory
- https://www.mozilla.org/en-US/security/advisories/mfsa2017-13/#CVE-2017-5461Vendor Advisory
- https://www.oracle.com//security-alerts/cpujul2021.html
- http://www.debian.org/security/2017/dsa-3831Patch
- http://www.debian.org/security/2017/dsa-3872Patch
- http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.htmlPatch
- http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.htmlPatch
- http://www.securityfocus.com/bid/98050Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1038320Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2017:1100Patch
- https://access.redhat.com/errata/RHSA-2017:1101Patch
- https://access.redhat.com/errata/RHSA-2017:1102Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.