libgcrypt before version 1.7.8 is vulnerable to a cache side-channel attack resulting into a complete break of RSA-1024 while using the left-to-right method for computing the sliding-window expansion. The same attack is believed to work on RSA-2048 with moderately more computation. This side-channel requires that attacker can run arbitrary software on the hardware where the private RSA key is used.
結論預警: CVE-2017-7526 綜合評估為中等風險（56.6/100）：CVSS 技術影響為中級，利用機率（EPSS 3.89%） 核心證據: 近一日 EPSS 上升 +1.12%，被利用關注度持續升高。 強制指令: 梳理受影響資產並納入修補計畫。
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 | 2026-06-15 | 2.77% | 3.89% | +1.12% |
| 2 | 2026-05-24 | 2.57% | 2.77% | +0.20% |
| 3 | 2026-02-09 | — | 2.57% | — |
完整 EPSS 歷史 （共 40 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 |
|---|---|---|---|---|---|---|
| 6.1 | 3.0 | MEDIUM |
|
1.6 | 4.0 | [email protected] |
| 6.8 | 3.0 | MEDIUM |
|
2.2 | 4.0 | [email protected] |
| 4.3 | 2.0 | MEDIUM |
|
8.6 | 2.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
— | CVE-2017-7526: 1 source package rows (gnupg1); 4 state rows across 4 repos (3.10-main, 3.11-main, 3.12-main, edge-community); fixed 4, open 0. | https://security.alpinelinux.org/vuln/CVE-2017-7526 |
debian
|
unimportant | CVE-2017-7526 unimportant priority: Debian including 3 source packages (gnupg1, gnupg2, libgcrypt20), 15 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 15. | https://security-tracker.debian.org/tracker/CVE-2017-7526 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2017-7526 |
suse
|
low | CVE-2017-7526 severity low: SUSE including 321 source package names (0.9.1:libgcrypt20-1.6.1-16.42.1, 1.0.0:libgcrypt20-1.6.1-16.42.1, …), 387 product×package rows across 80 product lines (Container caasp/v4/default-http-backend, Container caasp/v4/dnsmasq-nanny, … (80 product lines)): Fixed 230, Known Affected 157. | https://www.suse.com/security/cve/CVE-2017-7526/ |
ubuntu
|
medium | CVE-2017-7526 medium priority: Ubuntu including 4 source packages (gnupg, gnupg1, libgcrypt11, libgcrypt20), 30 status rows across 9 suites (artful, bionic, cosmic, disco, trusty, upstream, xenial, yakkety, zesty): DNE 13, not-affected 7, released 7, needs-triage 3. | https://ubuntu.com/security/CVE-2017-7526 |
| 廠商 | 產品 | 版本 | 原始 CPE |
|---|---|---|---|
| gnupg | libgcrypt | < 1.7.8 | cpe:2.3:a:gnupg:libgcrypt:*:*:*:*:*:*:*:* |
| canonical | ubuntu_linux | 12.04 | cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:* |
| canonical | ubuntu_linux | 14.04 | cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* |
| canonical | ubuntu_linux | 16.04 | cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* |
| debian | debian_linux | 8.0 | cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* |
| debian | debian_linux | 9.0 | cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* |
| URL | 標籤 |
|---|---|
| http://www.securityfocus.com/bid/99338 | Third Party Advisory VDB Entry |
| http://www.securitytracker.com/id/1038915 | Third Party Advisory VDB Entry |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7526 | Issue Tracking Patch Third Party Advisory |
| https://eprint.iacr.org/2017/627 | Third Party Advisory |
| https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git%3Ba=commit%3Bh=78130828e9a140a9de4dafadbc844dbb64cb709a | |
| https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git%3Ba=commit%3Bh=8725c99ffa41778f382ca97233183bcd687bb0ce | |
| https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git%3Ba=commit%3Bh=e6a3dc9900433bbc8ad362a595a3837318c28fa9 | |
| https://lists.gnupg.org/pipermail/gnupg-announce/2017q2/000408.html | Mailing List Vendor Advisory |
| https://usn.ubuntu.com/3733-1/ | Third Party Advisory |
| https://usn.ubuntu.com/3733-2/ | Third Party Advisory |
| https://www.debian.org/security/2017/dsa-3901 | Third Party Advisory |
| https://www.debian.org/security/2017/dsa-3960 | Third Party Advisory |