Heap-based buffer overflow in Mozilla Network Security Services (NSS) before 3.19.2.3 and 3.20.x and 3.21.x before 3.21.1, as used in Mozilla Firefox before 45.0 and Firefox ESR 38.x before 38.7, allows remote attackers to execute arbitrary code via crafted ASN.1 data in an X.509 certificate.
総合評価: CVE-2016-1950 は高リスク（68.9/100）。CVSS 深刻度は高。悪用される可能性が高い（EPSS 4.19%、90 パーセンタイル） 根拠: 直近 1 日で EPSS が +2.33% 上昇。悪用への関心が高まっている可能性があります。 推奨対応: 悪用可能性が高いため、影響範囲の確認と修補の優先付けを推奨します。
リスクは変動します。再評価に基づき、本ページの表示内容を更新しています。
EPSS は日次で悪用されやすさの相対度合いを推定します。パーセンタイルは採点済み CVE の中での相対位置（高いほど相対的に深刻）を示します。
| # | 日付 | 旧 EPSS スコア | 新 EPSS スコア | Δ（新 − 旧） |
|---|---|---|---|---|
| 1 | 2026-06-15 | 1.87% | 4.19% | +2.33% |
| 2 | 2026-01-19 | 3.33% | 1.87% | -1.46% |
| 3 | 2025-12-28 | — | 3.33% | — |
EPSS の全履歴 （全 23 件）
この CVE の CVSS 指標。
| ベーススコア | バージョン | 深刻度 | ベクトル | 悪用しやすさ | 影響 | スコアの出典 |
|---|---|---|---|---|---|---|
| 8.8 | 3.0 | HIGH |
|
2.8 | 5.9 | [email protected] |
| 6.8 | 2.0 | MEDIUM |
|
8.6 | 6.4 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2016-1950 not yet assigned priority: Debian including 3 source packages (firefox, firefox-esr, nss), 11 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 11. | https://security-tracker.debian.org/tracker/CVE-2016-1950 |
gentoo
|
normal | CVE-2016-1950: 1 GLSA(s) (201605-06), 6 atom(s) (dev-libs/nspr, dev-libs/nss, mail-client/thunderbird, mail-client/thunderbird-bin, www-client/firefox, www-client/firefox-bin); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2016-1950 |
redhat
|
critical | — | https://access.redhat.com/security/cve/CVE-2016-1950 |
suse
|
high | CVE-2016-1950 severity important: SUSE including 646 source package names (MozillaFirefox, MozillaFirefox-102.11.0-150200.152.87.1, …), 1102 product×package rows across 106 product lines (Image SLES12-SP5-Azure-BYOS, Image SLES12-SP5-Azure-Basic-On-Demand, … (106 product lines)): Fixed 896, Known Affected 157, Known Not Affected 49. | https://www.suse.com/security/cve/CVE-2016-1950/ |
ubuntu
|
medium | CVE-2016-1950 medium priority: Ubuntu including 3 source packages (firefox, nss, thunderbird), 21 status rows across 7 suites (precise, trusty, upstream, wily, xenial, yakkety, zesty): released 18, not-affected 3. | https://ubuntu.com/security/CVE-2016-1950 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| mozilla | network_security_services | 3.19.2 | cpe:2.3:a:mozilla:network_security_services:3.19.2:*:*:*:*:*:*:* |
| mozilla | network_security_services | 3.20 | cpe:2.3:a:mozilla:network_security_services:3.20:*:*:*:*:*:*:* |
| mozilla | network_security_services | 3.20.1 | cpe:2.3:a:mozilla:network_security_services:3.20.1:*:*:*:*:*:*:* |
| mozilla | network_security_services | 3.21 | cpe:2.3:a:mozilla:network_security_services:3.21:*:*:*:*:*:*:* |
| mozilla | firefox | <= 44.0.2 | cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* |
| mozilla | firefox | 38.0 | cpe:2.3:a:mozilla:firefox:38.0:*:*:*:*:*:*:* |
| mozilla | firefox | 38.0.1 | cpe:2.3:a:mozilla:firefox:38.0.1:*:*:*:*:*:*:* |
| mozilla | firefox | 38.0.5 | cpe:2.3:a:mozilla:firefox:38.0.5:*:*:*:*:*:*:* |
| mozilla | firefox | 38.1.0 | cpe:2.3:a:mozilla:firefox:38.1.0:*:*:*:*:*:*:* |
| mozilla | firefox | 38.1.1 | cpe:2.3:a:mozilla:firefox:38.1.1:*:*:*:*:*:*:* |
| mozilla | firefox | 38.2.0 | cpe:2.3:a:mozilla:firefox:38.2.0:*:*:*:*:*:*:* |
| mozilla | firefox | 38.2.1 | cpe:2.3:a:mozilla:firefox:38.2.1:*:*:*:*:*:*:* |
| mozilla | firefox | 38.3.0 | cpe:2.3:a:mozilla:firefox:38.3.0:*:*:*:*:*:*:* |
| mozilla | firefox | 38.4.0 | cpe:2.3:a:mozilla:firefox:38.4.0:*:*:*:*:*:*:* |
| mozilla | firefox | 38.5.0 | cpe:2.3:a:mozilla:firefox:38.5.0:*:*:*:*:*:*:* |
| mozilla | firefox | 38.5.1 | cpe:2.3:a:mozilla:firefox:38.5.1:*:*:*:*:*:*:* |
| mozilla | firefox | 38.6.0 | cpe:2.3:a:mozilla:firefox:38.6.0:*:*:*:*:*:*:* |
| mozilla | firefox | 38.6.1 | cpe:2.3:a:mozilla:firefox:38.6.1:*:*:*:*:*:*:* |
| oracle | linux | 5.0 | cpe:2.3:o:oracle:linux:5.0:*:*:*:*:*:*:* |
| oracle | linux | 6 | cpe:2.3:o:oracle:linux:6:*:*:*:*:*:*:* |
| oracle | linux | 7 | cpe:2.3:o:oracle:linux:7:*:*:*:*:*:*:* |
| oracle | vm_server | 3.2 | cpe:2.3:o:oracle:vm_server:3.2:*:*:*:*:*:*:* |
| apple | iphone_os | <= 9.2.1 | cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* |
| apple | mac_os_x | <= 10.11.3 | cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:* |
| apple | tvos | <= 9.1 | cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:* |
| apple | watchos | <= 2.1 | cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:* |
| oracle | glassfish_server | 2.1.1 | cpe:2.3:a:oracle:glassfish_server:2.1.1:*:*:*:*:*:*:* |
| oracle | iplanet_web_proxy_server | 4.0 | cpe:2.3:a:oracle:iplanet_web_proxy_server:4.0:*:*:*:*:*:*:* |
| oracle | iplanet_web_server | 7.0 | cpe:2.3:a:oracle:iplanet_web_server:7.0:*:*:*:*:*:*:* |
| opensuse | opensuse | 13.1 | cpe:2.3:o:opensuse:opensuse:13.1:*:*:*:*:*:*:* |