Mozilla Network Security Services (NSS) before 3.15.2 does not ensure that data structures are initialized before read operations, which allows remote attackers to cause a denial of service or possibly have unspecified other impact via vectors that trigger a decryption failure.
Conclusion & alert: CVE-2013-1739 is rated Moderate Risk (50.6/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 3.41%). Mandatory action: Review affected assets and schedule remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-06-18 | 3.34% | 3.41% | +0.06% |
| 2 | 2026-06-15 | 3.95% | 3.34% | -0.61% |
| 3 | 2026-04-25 | — | 3.95% | — |
Full EPSS history (11 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 5.0 | 2.0 | MEDIUM |
|
10.0 | 2.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2013-1739 not yet assigned priority: Debian including 1 source packages (nss), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2013-1739 |
gentoo
|
normal | CVE-2013-1739: 1 GLSA(s) (201406-19), 1 atom(s) (dev-libs/nss); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2013-1739 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2013-1739 |
suse
|
medium | CVE-2013-1739 severity moderate: SUSE including 198 source package names (MozillaFirefox-17.0.10esr-0.4.2.1, MozillaFirefox-17.0.10esr-0.4.2.4, …), 373 product×package rows across 41 product lines (SUSE Linux Enterprise Desktop 11 SP2, SUSE Linux Enterprise Desktop 11 SP3, … (41 product lines)): Fixed 373. | https://www.suse.com/security/cve/CVE-2013-1739/ |
ubuntu
|
medium | CVE-2013-1739 medium priority: Ubuntu including 3 source packages (firefox, nss, thunderbird), 18 status rows across 6 suites (lucid, precise, quantal, raring, saucy, upstream): released 16, ignored 2. | https://ubuntu.com/security/CVE-2013-1739 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| mozilla | network_security_services | <= 3.15.1 | cpe:2.3:a:mozilla:network_security_services:*:*:*:*:*:*:*:* |
| mozilla | network_security_services | 3.12 | cpe:2.3:a:mozilla:network_security_services:3.12:*:*:*:*:*:*:* |
| mozilla | network_security_services | 3.12.1 | cpe:2.3:a:mozilla:network_security_services:3.12.1:*:*:*:*:*:*:* |
| mozilla | network_security_services | 3.12.2 | cpe:2.3:a:mozilla:network_security_services:3.12.2:*:*:*:*:*:*:* |
| mozilla | network_security_services | 3.12.3 | cpe:2.3:a:mozilla:network_security_services:3.12.3:*:*:*:*:*:*:* |
| mozilla | network_security_services | 3.12.3.1 | cpe:2.3:a:mozilla:network_security_services:3.12.3.1:*:*:*:*:*:*:* |
| mozilla | network_security_services | 3.12.3.2 | cpe:2.3:a:mozilla:network_security_services:3.12.3.2:*:*:*:*:*:*:* |
| mozilla | network_security_services | 3.12.4 | cpe:2.3:a:mozilla:network_security_services:3.12.4:*:*:*:*:*:*:* |
| mozilla | network_security_services | 3.12.5 | cpe:2.3:a:mozilla:network_security_services:3.12.5:*:*:*:*:*:*:* |
| mozilla | network_security_services | 3.12.6 | cpe:2.3:a:mozilla:network_security_services:3.12.6:*:*:*:*:*:*:* |
| mozilla | network_security_services | 3.12.7 | cpe:2.3:a:mozilla:network_security_services:3.12.7:*:*:*:*:*:*:* |
| mozilla | network_security_services | 3.12.8 | cpe:2.3:a:mozilla:network_security_services:3.12.8:*:*:*:*:*:*:* |
| mozilla | network_security_services | 3.12.9 | cpe:2.3:a:mozilla:network_security_services:3.12.9:*:*:*:*:*:*:* |
| mozilla | network_security_services | 3.12.10 | cpe:2.3:a:mozilla:network_security_services:3.12.10:*:*:*:*:*:*:* |
| mozilla | network_security_services | 3.12.11 | cpe:2.3:a:mozilla:network_security_services:3.12.11:*:*:*:*:*:*:* |
| mozilla | network_security_services | 3.14 | cpe:2.3:a:mozilla:network_security_services:3.14:*:*:*:*:*:*:* |
| mozilla | network_security_services | 3.14.1 | cpe:2.3:a:mozilla:network_security_services:3.14.1:*:*:*:*:*:*:* |
| mozilla | network_security_services | 3.14.2 | cpe:2.3:a:mozilla:network_security_services:3.14.2:*:*:*:*:*:*:* |
| mozilla | network_security_services | 3.14.3 | cpe:2.3:a:mozilla:network_security_services:3.14.3:*:*:*:*:*:*:* |
| mozilla | network_security_services | 3.15 | cpe:2.3:a:mozilla:network_security_services:3.15:*:*:*:*:*:*:* |