VDB
JLSEC-2026-63
JLSEC-2026-63
PUBLISHED
CVSS 4.300000190734863 MEDIUM
The client side in OpenSSH 5.7 through 8.4 has an Observable Discrepancy leading to an information leak in the algorithm negotiation. This allows man-in-the-middle attackers to target initial connection attempts (where no host key for the server has been cached by the client). NOTE: some reports state that 8.5 and 8.6 are also affected.
Risk Scores
CVSS 2.0
4.300000190734863
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Julia | OpenSSH_jll | 0 |
| Julia | OpenSSH_jll | 0, 0 |
Timeline
- Apr 9, 2026 CVE Published
- Jul 18, 2026 CVE Updated
References
- http://www.openwall.com/lists/oss-security/2020/12/02/1 url
- https://anongit.mindrot.org/openssh.git/commit/?id=b3855ff053f5078ec3d3c653cdaedefaa5fc362d url
- https://docs.ssh-mitm.at/CVE-2020-14145.html url
- https://github.com/openssh/openssh-portable/compare/V_8_3_P1...V_8_4_P1 url
- https://github.com/ssh-mitm/ssh-mitm/blob/master/ssh_proxy_server/plugins/session/cve202014145.py url
- https://security.gentoo.org/glsa/202105-35 url
- https://security.netapp.com/advisory/ntap-20200709-0004/ url
- https://www.fzi.de/en/news/news/detail-en/artikel/fsa-2020-2-ausnutzung-eines-informationslecks-fuer-gezielte-mitm-angriffe-auf-ssh-clients/ url