Use-after-free vulnerability in the ssl3_HandleECDHServerKeyExchange function in Mozilla Network Security Services (NSS) before 3.21, as used in Mozilla Firefox before 44.0, allows remote attackers to cause a denial of service or possibly have unspecified other impact by making an SSL (1) DHE or (2) ECDHE handshake at a time of high memory consumption.
结论预警: CVE-2016-1978 综合评估为中等风险（57.7/100）：CVSS 技术影响为高级，利用概率（EPSS 2.39%） 强制指令: 梳理受影响资产并纳入修补计划。
风险随态势动态变化；本站持续评估并同步更新本页展示内容。
EPSS 日更估计相对被利用可能性；百分位表示该 CVE 在已评分漏洞中的相对排名（越高表示相对更严重）。
| # | 日期 | 旧 EPSS 分数 | 新 EPSS 分数 | 变化（新 − 旧） |
|---|---|---|---|---|
| 1 | 2026-06-15 | 2.46% | 2.39% | -0.07% |
| 2 | 2026-03-30 | 2.26% | 2.46% | +0.20% |
| 3 | 2025-12-07 | — | 2.26% | — |
完整 EPSS 历史 （共 13 条）
该 CVE 的 CVSS 指标。
| 底座分 | 版本 | 严重度 | 向量 | 可利用性 | 影响 | 分数来源 |
|---|---|---|---|---|---|---|
| 7.3 | 3.0 | HIGH |
|
3.9 | 3.4 | [email protected] |
| 7.5 | 2.0 | HIGH |
|
10.0 | 6.4 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2016-1978 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-2016-1978 |
gentoo
|
normal | CVE-2016-1978: 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-2016-1978 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2016-1978 |
suse
|
high | CVE-2016-1978 severity important: SUSE including 128 source package names (MozillaFirefox-38.7.0esr-36.3, MozillaFirefox-38.7.0esr-37.3, …), 415 product×package rows across 51 product lines (Image SLES12-SP5-Azure-BYOS, Image SLES12-SP5-Azure-Basic-On-Demand, … (51 product lines)): Fixed 415. | https://www.suse.com/security/cve/CVE-2016-1978/ |
ubuntu
|
medium | CVE-2016-1978 medium priority: Ubuntu including 3 source packages (firefox, nss, thunderbird), 21 status rows across 7 suites (precise, trusty, upstream, wily, xenial, yakkety, zesty): released 15, not-affected 6. | https://ubuntu.com/security/CVE-2016-1978 |
: <a href="http://cwe.mitre.org/data/definitions/416.html">CWE-416: Use After Free</a>
| 厂商 | 产品 | 版本 | 原始 CPE |
|---|---|---|---|
| mozilla | firefox | <= 43.0.4 | cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* |
| mozilla | network_security_services | <= 3.20.1 | cpe:2.3:a:mozilla:network_security_services:*:*:*:*:*:*:*:* |