There is a carry propagating bug in the Broadwell-specific Montgomery multiplication procedure in OpenSSL 1.0.2 and 1.1.0 before 1.1.0c that handles input lengths divisible by, but longer than 256 bits. Analysis suggests that attacks against RSA, DSA and DH private keys are impossible. This is because the subroutine in question is not used in operations with the private key itself and an input of the attacker's direct choice. Otherwise the bug can manifest itself as transient authentication and key negotiation failures or reproducible erroneous outcome of public-key operations with specially crafted input. Among EC algorithms only Brainpool P-512 curves are affected and one presumably can attack ECDH key negotiation. Impact was not analyzed in detail, because pre-requisites for attack are considered unlikely. Namely multiple clients have to choose the curve in question and the server has to share the private key among them, neither of which is default behaviour. Even then only clients that chose the curve will be affected.
結論預警: CVE-2016-7055 綜合評估為中等風險（57.1/100）：CVSS 技術影響為中級，利用機率偏高（EPSS 14.22%，百分位 96%） 核心證據: EPSS 顯示該漏洞近期被利用的可能性處於高位。 強制指令: 被利用機率偏高—請盤點暴露面並優先安排修補。
風險隨態勢動態變化；本站持續評估並同步更新本頁展示內容。
EPSS 日更估計相對被利用可能性；百分位表示該 CVE 在已評分漏洞中的相對排名（越高表示相對更嚴重）。
| # | 日期 | 舊 EPSS 分數 | 新 EPSS 分數 | 變化（新 − 舊） |
|---|---|---|---|---|
| 1 | 2026-06-25 | 14.34% | 14.22% | -0.11% |
| 2 | 2026-06-15 | 2.69% | 14.34% | +11.65% |
| 3 | 2026-05-24 | — | 2.69% | — |
完整 EPSS 歷史 （共 30 筆）
該 CVE 的 CVSS 指標。
| 底座分 | 版本 | 嚴重度 | 向量 | 可利用性 | 影響 | 分數來源 |
|---|---|---|---|---|---|---|
| 5.9 | 3.1 | MEDIUM |
|
2.2 | 3.6 | [email protected] |
| 2.6 | 2.0 | LOW |
|
4.9 | 2.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
low | CVE-2016-7055 low priority: Debian including 1 source packages (openssl), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2016-7055 |
gentoo
|
normal | CVE-2016-7055: 1 GLSA(s) (201702-07), 1 atom(s) (dev-libs/openssl); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2016-7055 |
redhat
|
low | — | https://access.redhat.com/security/cve/CVE-2016-7055 |
suse
|
medium | CVE-2016-7055 severity moderate: SUSE including 467 source package names (0.9.1:libopenssl1_0_0-1.0.2j-59.1, 0.9.1:openssl-1.0.2j-59.1, …), 729 product×package rows across 94 product lines (Container caasp/v4/default-http-backend, Container caasp/v4/dnsmasq-nanny, … (94 product lines)): Fixed 377, Known Not Affected 195, Known Affected 157. | https://www.suse.com/security/cve/CVE-2016-7055/ |
ubuntu
|
low | CVE-2016-7055 low priority: Ubuntu including 2 source packages (openssl, openssl098), 10 status rows across 5 suites (precise, trusty, upstream, xenial, yakkety): not-affected 4, DNE 3, released 2, needs-triage 1. | https://ubuntu.com/security/CVE-2016-7055 |
| 廠商 | 產品 | 版本 | 原始 CPE |
|---|---|---|---|
| openssl | openssl | >= 1.0.2, < 1.0.2k | cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:* |
| openssl | openssl | >= 1.1.0, < 1.1.0c | cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:* |
| nodejs | node.js | >= 4.0.0, <= 4.1.2 | cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:* |
| nodejs | node.js | >= 4.2.0, < 4.7.3 | cpe:2.3:a:nodejs:node.js:*:*:*:*:lts:*:*:* |
| nodejs | node.js | >= 6.0.0, <= 6.8.1 | cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:* |
| nodejs | node.js | >= 6.9.0, < 6.9.5 | cpe:2.3:a:nodejs:node.js:*:*:*:*:lts:*:*:* |
| nodejs | node.js | >= 7.0.0, < 7.5.0 | cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:* |