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CVE-2026-35387

CVE-2026-35387

This page contains facts from public vulnerability sources. Check the original advisory before updating.

This page shows selected source facts. See the linked advisories for the complete description and affected versions.

OpenSSH before 10.3 can use unintended ECDSA algorithms. Listing of any ECDSA algorithm in PubkeyAcceptedAlgorithms or HostbasedAcceptedAlgorithms is misinterpreted to mean all ECDSA algorithms.

CVSS 3.1 · Low · EPSS 0.5% · Fix available

Published
Updated

Stack: system · network

Affected products and versions

  • openssh

    Versions
    • ≥ 0, < 10.3: Affected (custom)

    Update to 10.3

  • openssh Debian:12

    Versions
    • 1:9.2p1-2
    • 1:9.2p1-2+deb12u1
    • 1:9.2p1-2+deb12u2
    • 1:9.2p1-2+deb12u3
    • 1:9.2p1-2+deb12u4
    • 1:9.2p1-2+deb12u5
    • 1:9.2p1-2+deb12u6
    • 1:9.2p1-2+deb12u7
    • 1:9.2p1-2+deb12u8
    • 1:9.2p1-2+deb12u9
    Affected ranges
    • ECOSYSTEM: < 1:9.2p1-2+deb12u10

    Update to 1:9.2p1-2+deb12u10

  • openssh Debian:13

    Versions
    • 1:10.0p1-7
    • 1:10.0p1-7+deb13u1
    • 1:10.0p1-7+deb13u2
    Affected ranges
    • ECOSYSTEM: < 1:10.0p1-7+deb13u3

    Update to 1:10.0p1-7+deb13u3

  • openssh Debian:14

    Versions
    • 1:10.0p1-7
    • 1:10.0p1-8
    • 1:10.1p1-1
    • 1:10.1p1-2
    • 1:10.2p1-1
    • 1:10.2p1-2
    • 1:10.2p1-2~bpo13+1
    • 1:10.2p1-3
    • 1:10.2p1-4
    • 1:10.2p1-5
    • 1:10.2p1-6
    • 1:10.2p1-6~bpo13+1
    • 1:10.3p1-1~bpo13+1
    Affected ranges
    • ECOSYSTEM: < 1:10.3p1-1

    Update to 1:10.3p1-1

  • openssh Ubuntu:Pro:14.04:LTS

    Versions
    • 1:6.2p2-6
    • 1:6.2p2-6ubuntu1
    • 1:6.4p1-1
    • 1:6.4p1-2
    • 1:6.5p1-1
    • 1:6.5p1-2
    • 1:6.5p1-3
    • 1:6.5p1-4
    • 1:6.5p1-6
    • 1:6.6p1-1
    • 1:6.6p1-2
    • 1:6.6p1-2ubuntu1
    • 1:6.6p1-2ubuntu2
    • 1:6.6p1-2ubuntu2.2
    • 1:6.6p1-2ubuntu2.3
    • 1:6.6p1-2ubuntu2.4
    • 1:6.6p1-2ubuntu2.6
    • 1:6.6p1-2ubuntu2.7
    • 1:6.6p1-2ubuntu2.8
    • 1:6.6p1-2ubuntu2.10
    • 1:6.6p1-2ubuntu2.11
    • 1:6.6p1-2ubuntu2.12
    • 1:6.6p1-2ubuntu2.13
    • 1:6.6p1-2ubuntu2.13+esm1
    • 1:6.6p1-2ubuntu2.13+esm2
    • 1:6.6p1-2ubuntu2.13+esm3
    Affected ranges
    • ECOSYSTEM: < 1:6.6p1-2ubuntu2.13+esm4

    Update to 1:6.6p1-2ubuntu2.13+esm4

  • openssh Ubuntu:Pro:16.04:LTS

    Versions
    • 1:6.9p1-2
    • 1:6.9p1-3
    • 1:7.1p1-1
    • 1:7.1p1-3
    • 1:7.1p1-4
    • 1:7.1p1-6
    • 1:7.1p2-1
    • 1:7.1p2-2
    • 1:7.2p1-1
    • 1:7.2p2-1
    • 1:7.2p2-2
    • 1:7.2p2-3
    • 1:7.2p2-4
    • 1:7.2p2-4ubuntu1
    • 1:7.2p2-4ubuntu2.1
    • 1:7.2p2-4ubuntu2.2
    • 1:7.2p2-4ubuntu2.4
    • 1:7.2p2-4ubuntu2.5
    • 1:7.2p2-4ubuntu2.6
    • 1:7.2p2-4ubuntu2.7
    • 1:7.2p2-4ubuntu2.8
    • 1:7.2p2-4ubuntu2.10
    • 1:7.2p2-4ubuntu2.10+esm1
    • 1:7.2p2-4ubuntu2.10+esm2
    • 1:7.2p2-4ubuntu2.10+esm3
    • 1:7.2p2-4ubuntu2.10+esm4
    • 1:7.2p2-4ubuntu2.10+esm5
    • 1:7.2p2-4ubuntu2.10+esm6
    • 1:7.2p2-4ubuntu2.10+esm7
    • 1:7.2p2-4ubuntu2.10+esm8
    • 1:7.2p2-4ubuntu2.10+esm9
    Affected ranges
    • ECOSYSTEM: < 1:7.2p2-4ubuntu2.10+esm10

    Update to 1:7.2p2-4ubuntu2.10+esm10

  • openssh Ubuntu:Pro:FIPS-updates:16.04:LTS

    Versions
    • 1:7.2p2-4ubuntu2.fips.2.2.3
    • 1:7.2p2-4ubuntu2.fips.2.4.1
    • 1:7.2p2-4ubuntu2.fips.2.4.2
    • 1:7.2p2-4ubuntu2.fips.2.8.1
    • 1:7.2p2-4ubuntu2.fips.2.10.1
    • 1:7.2p2-4ubuntu2.fips.2.10.2
    • 1:7.2p2-4ubuntu2.fips.2.10.3
    • 1:7.2p2-4ubuntu2.fips.2.10.4
    • 1:7.2p2-4ubuntu2.fips.2.10.5
    • 1:7.2p2-4ubuntu2.fips.2.10.6
    • 1:7.2p2-4ubuntu2.fips.2.10.7
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • openssh Ubuntu:Pro:FIPS:16.04:LTS

    Versions
    • 1:7.2p2-4ubuntu2.fips.2.2
    • 1:7.2p2-4ubuntu2.fips.2.2.1
    • 1:7.2p2-4ubuntu2.fips.2.10.1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • openssh Ubuntu:Pro:18.04:LTS

    Versions
    • 1:7.5p1-10
    • 1:7.6p1-4
    • 1:7.6p1-4ubuntu0.1
    • 1:7.6p1-4ubuntu0.2
    • 1:7.6p1-4ubuntu0.3
    • 1:7.6p1-4ubuntu0.5
    • 1:7.6p1-4ubuntu0.6
    • 1:7.6p1-4ubuntu0.7
    • 1:7.6p1-4ubuntu0.7+esm1
    • 1:7.6p1-4ubuntu0.7+esm2
    • 1:7.6p1-4ubuntu0.7+esm3
    • 1:7.6p1-4ubuntu0.7+esm4
    • 1:7.6p1-4ubuntu0.7+esm5
    Affected ranges
    • ECOSYSTEM: < 1:7.6p1-4ubuntu0.7+esm6

    Update to 1:7.6p1-4ubuntu0.7+esm6

  • openssh-ssh1 Ubuntu:18.04:LTS

    Versions
    • 1:7.5p1-8
    • 1:7.5p1-9
    • 1:7.5p1-9build1
    • 1:7.5p1-10
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • openssh Ubuntu:Pro:FIPS-updates:18.04:LTS

    Versions
    • 1:7.9p1-10~ubuntu18.04.fips.0.1
    • 1:7.9p1-10~ubuntu18.04.fips.0.2
    • 1:7.9p1-10~ubuntu18.04.fips.0.3
    • 1:7.9p1-10~ubuntu18.04.fips.0.4
    • 1:7.9p1-10~ubuntu18.04.fips.0.5
    • 1:7.9p1-10~ubuntu18.04.fips.0.6
    • 1:7.9p1-10~ubuntu18.04.fips.0.7
    • 1:7.9p1-10~ubuntu18.04.fips.0.8
    • 1:7.9p1-10~ubuntu18.04.fips.0.9
    • 1:7.9p1-10~ubuntu18.04.fips.0.10
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • openssh Ubuntu:Pro:FIPS:18.04:LTS

    Versions
    • 1:7.9p1-10~ubuntu18.04.fips.0.1
    • 1:7.9p1-10~ubuntu18.04.fips.0.2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • openssh Ubuntu:Pro:20.04:LTS

    Versions
    • 1:8.0p1-6build1
    • 1:8.1p1-1
    • 1:8.1p1-5
    • 1:8.2p1-4
    • 1:8.2p1-4ubuntu0.1
    • 1:8.2p1-4ubuntu0.2
    • 1:8.2p1-4ubuntu0.3
    • 1:8.2p1-4ubuntu0.4
    • 1:8.2p1-4ubuntu0.5
    • 1:8.2p1-4ubuntu0.7
    • 1:8.2p1-4ubuntu0.8
    • 1:8.2p1-4ubuntu0.9
    • 1:8.2p1-4ubuntu0.10
    • 1:8.2p1-4ubuntu0.11
    • 1:8.2p1-4ubuntu0.12
    • 1:8.2p1-4ubuntu0.13
    • 1:8.2p1-4ubuntu0.13+esm1
    • 1:8.2p1-4ubuntu0.13+esm2
    Affected ranges
    • ECOSYSTEM: < 1:8.2p1-4ubuntu0.13+esm3

    Update to 1:8.2p1-4ubuntu0.13+esm3

  • openssh-ssh1 Ubuntu:20.04:LTS

    Versions
    • 1:7.5p1-11build1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • openssh Ubuntu:Pro:FIPS-updates:20.04:LTS

    Versions
    • 1:8.2p1-4ubuntu0.fips.0.2.1
    • 1:8.2p1-4ubuntu0.fips.0.4.0
    • 1:8.2p1-4ubuntu0.fips.0.5.0
    • 1:8.2p1-4ubuntu0.fips.0.7
    • 1:8.2p1-4ubuntu0.fips.0.8
    • 1:8.2p1-4ubuntu0.fips.0.9
    • 1:8.2p1-4ubuntu0.fips.0.10
    • 1:8.2p1-4ubuntu0.fips.0.11
    • 1:8.2p1-4ubuntu0.fips.0.12
    • 1:8.2p1-4ubuntu0.fips.0.13
    • 1:8.2p1-4ubuntu0.fips.0.13.1
    • 1:8.2p1-4ubuntu0.fips.0.13.3
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • openssh Ubuntu:Pro:FIPS:20.04:LTS

    Versions
    • 1:8.2p1-4ubuntu0.fips.0.2.1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • openssh Ubuntu:22.04:LTS

    Versions
    • 1:8.4p1-6ubuntu2
    • 1:8.7p1-2
    • 1:8.7p1-2build1
    • 1:8.7p1-4
    • 1:8.8p1-1
    • 1:8.9p1-3
    • 1:8.9p1-3ubuntu0.1
    • 1:8.9p1-3ubuntu0.3
    • 1:8.9p1-3ubuntu0.4
    • 1:8.9p1-3ubuntu0.5
    • 1:8.9p1-3ubuntu0.6
    • 1:8.9p1-3ubuntu0.7
    • 1:8.9p1-3ubuntu0.10
    • 1:8.9p1-3ubuntu0.11
    • 1:8.9p1-3ubuntu0.13
    • 1:8.9p1-3ubuntu0.14
    Affected ranges
    • ECOSYSTEM: < 1:8.9p1-3ubuntu0.15

    Update to 1:8.9p1-3ubuntu0.15

  • openssh-ssh1 Ubuntu:22.04:LTS

    Versions
    • 1:7.5p1-12
    • 1:7.5p1-12build1
    • 1:7.5p1-13
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • openssh Ubuntu:Pro:FIPS-preview:22.04:LTS

    Versions
    • 1:8.9p1-3ubuntu0.4+Fips1
    • 1:8.9p1-3ubuntu0.4+Fips3
    • 1:8.9p1-3ubuntu1.fips.0~ppa3
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • openssh Ubuntu:Pro:FIPS-updates:22.04:LTS

    Versions
    • 1:8.9p1-3ubuntu0.4+Fips1
    • 1:8.9p1-3ubuntu0.4+Fips3
    • 1:8.9p1-3ubuntu0.6+Fips1
    • 1:8.9p1-3ubuntu0.7+Fips1
    • 1:8.9p1-3ubuntu0.10+Fips1
    • 1:8.9p1-3ubuntu0.11+Fips1
    • 1:8.9p1-3ubuntu0.13+Fips1
    • 1:8.9p1-3ubuntu0.14+Fips1
    Affected ranges
    • ECOSYSTEM: < 1:8.9p1-3ubuntu0.15+Fips1

    Update to 1:8.9p1-3ubuntu0.15+Fips1

  • openssh Ubuntu:24.04:LTS

    Versions
    • 1:9.3p1-1ubuntu3
    • 1:9.4p1-1ubuntu1
    • 1:9.6p1-3ubuntu1
    • 1:9.6p1-3ubuntu2
    • 1:9.6p1-3ubuntu11
    • 1:9.6p1-3ubuntu12
    • 1:9.6p1-3ubuntu13
    • 1:9.6p1-3ubuntu13.3
    • 1:9.6p1-3ubuntu13.4
    • 1:9.6p1-3ubuntu13.5
    • 1:9.6p1-3ubuntu13.7
    • 1:9.6p1-3ubuntu13.8
    • 1:9.6p1-3ubuntu13.9
    • 1:9.6p1-3ubuntu13.11
    • 1:9.6p1-3ubuntu13.12
    • 1:9.6p1-3ubuntu13.13
    • 1:9.6p1-3ubuntu13.14
    • 1:9.6p1-3ubuntu13.15
    Affected ranges
    • ECOSYSTEM: < 1:9.6p1-3ubuntu13.16

    Update to 1:9.6p1-3ubuntu13.16

  • openssh-ssh1 Ubuntu:24.04:LTS

    Versions
    • 1:7.5p1-14
    • 1:7.5p1-15
    • 1:7.5p1-15build1
    • 1:7.5p1-16
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • openssh Ubuntu:Pro:FIPS-updates:24.04:LTS

    Versions
    • 1:9.6p1-3ubuntu13.7+Fips1
    • 1:9.6p1-3ubuntu13.12+Fips1
    • 1:9.6p1-3ubuntu13.13+Fips1
    • 1:9.6p1-3ubuntu13.14+Fips1
    • 1:9.6p1-3ubuntu13.15+Fips1
    Affected ranges
    • ECOSYSTEM: < 1:9.6p1-3ubuntu13.16+Fips1

    Update to 1:9.6p1-3ubuntu13.16+Fips1

  • openssh Ubuntu:25.10

    Versions
    • 1:9.9p1-3ubuntu3
    • 1:9.9p1-3ubuntu3.1
    • 1:10.0p1-5ubuntu2
    • 1:10.0p1-5ubuntu3
    • 1:10.0p1-5ubuntu4
    • 1:10.0p1-5ubuntu5
    • 1:10.0p1-5ubuntu5.1
    Affected ranges
    • ECOSYSTEM: < 1:10.0p1-5ubuntu5.4

    Update to 1:10.0p1-5ubuntu5.4

Original sources

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