CVE-2017-7526
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…
- Published
- Updated
- Reserved
- Assigned by
- redhat
Description
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.
Timeline
ID reserved
By redhat
- 16 months later
· 16 months later
Published
- 7 years later
· 7 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| redhatCNA (assigner) | 3.0 | Medium6.1 | CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:N/A:N |
| NVDNVD · Modified | 3.0 | Medium6.8 | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N |
- EPSS (exploitation in 30 days)
- 3.8% · top 9.8% of all CVEs (8 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.1.
Weakness
Affected products
References (12)
- USN-3733-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7526 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 1038915 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- DSA-3960 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git%3Ba=commit%3Bh=78130828e9a140a9de4dafadbc844dbb64cb709a (opens in a new tab)x_refsource_CONFIRMx_transferred
- DSA-3901 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- USN-3733-2 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- https://eprint.iacr.org/2017/627 (opens in a new tab)x_refsource_MISCx_transferred
- 99338 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- [gnupg-announce] 20170629 Libgcrypt 1.7.8 released to fix CVE-2017-7526 (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git%3Ba=commit%3Bh=e6a3dc9900433bbc8ad362a595a3837318c28fa9 (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git%3Ba=commit%3Bh=8725c99ffa41778f382ca97233183bcd687bb0ce (opens in a new tab)x_refsource_CONFIRMx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2017-7526)Record last updated .