CVE-2025-26466
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2025-26466
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-26466.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2025-26466
- Related
- Published
- 2025-02-28T22:15:40Z
- Modified
- 2025-03-21T16:55:26.161864Z
- Summary
- [none]
- Details
-
A flaw was found in the OpenSSH package. For each ping packet the SSH server receives, a pong packet is allocated in a memory buffer and stored in a queue of packages. It is only freed when the server/client key exchange has finished. A malicious client may keep sending such packages, leading to an uncontrolled increase in memory consumption on the server side. Consequently, the server may become unavailable, resulting in a denial of service attack.
- References
-
- https://security.netapp.com/advisory/ntap-20250228-0002/
- https://www.openwall.com/lists/oss-security/2025/02/18/1
- https://www.openwall.com/lists/oss-security/2025/02/18/4
- https://bugzilla.redhat.com/show_bug.cgi?id=2345043
- https://bugzilla.suse.com/show_bug.cgi?id=1237041
- https://access.redhat.com/security/cve/CVE-2025-26466
- https://www.qualys.com/2025/02/18/openssh-mitm-dos.txt
- https://security-tracker.debian.org/tracker/CVE-2025-26466
- https://ubuntu.com/security/CVE-2025-26466
- https://security.alpinelinux.org/vuln/CVE-2025-26466
Affected packages
Alpine:v3.19 / openssh
Package
- Name
- openssh
- Purl
- pkg:apk/alpine/openssh?arch=source
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed9.6_p1-r2
Affected versions
5.*
5.1p1-r0
5.1_p1-r1
5.1_p1-r2
5.2_p1-r0
5.2_p1-r1
5.2_p1-r2
5.2_p1-r3
5.3_p1-r3
5.4_p1-r0
5.4_p1-r1
5.4_p1-r2
5.4_p1-r3
5.5_p1-r0
5.6_p1-r0
5.6_p1-r1
5.8_p1-r0
5.8_p1-r1
5.8_p1-r2
5.8_p2-r0
5.8_p2-r1
5.8_p2-r2
5.9_p1-r0
5.9_p1-r1
5.9_p1-r2
6.*
6.0_p1-r0
6.1_p1-r0
6.1_p1-r1
6.1_p1-r2
6.2_p1-r0
6.2_p2-r0
6.2_p2-r1
6.2_p2-r2
6.3_p1-r0
6.3_p1-r1
6.3_p1-r2
6.4_p1-r0
6.4_p1-r1
6.6_p1-r0
6.6_p1-r1
6.6_p1-r2
6.6_p1-r3
6.6_p1-r4
6.6_p1-r5
6.6_p1-r6
6.7_p1-r0
6.8_p1-r0
6.8_p1-r1
6.8_p1-r2
6.9_p1-r0
6.9_p1-r1
6.9_p1-r2
6.9_p1-r3
6.9_p1-r4
6.9_p1-r5
7.*
7.1_p1-r0
7.1_p1-r1
7.1_p2-r0
7.2_p1-r0
7.2_p2-r0
7.2_p2-r1
7.3_p1-r0
7.3_p1-r1
7.3_p1-r2
7.4_p1-r0
7.4_p1-r1
7.4_p1-r2
7.5_p1-r0
7.5_p1-r1
7.5_p1-r2
7.5_p1-r3
7.5_p1-r4
7.5_p1-r5
7.5_p1-r6
7.5_p1-r7
7.5_p1-r8
7.6_p1-r0
7.6_p1-r1
7.7_p1-r0
7.7_p1-r1
7.7_p1-r2
7.7_p1-r3
7.7_p1-r4
7.8_p1-r0
7.9_p1-r0
7.9_p1-r1
7.9_p1-r2
7.9_p1-r3
7.9_p1-r4
7.9_p1-r5
8.*
8.0_p1-r0
8.0_p1-r1
8.0_p1-r2
8.1_p1-r0
8.2_p1-r0
8.3_p1-r0
8.4_p1-r0
8.4_p1-r1
8.4_p1-r2
8.4_p1-r3
8.5_p1-r0
8.5_p1-r1
8.5_p1-r2
8.6_p1-r0
8.6_p1-r1
8.6_p1-r2
8.6_p1-r3
8.6_p1-r4
8.8_p1-r0
8.8_p1-r1
8.8_p1-r2
8.8_p1-r3
8.8_p1-r4
8.9_p1-r0
9.*
9.0_p1-r0
9.0_p1-r1
9.0_p1-r2
9.0_p1-r3
9.0_p1-r4
9.1_p1-r0
9.1_p1-r1
9.2_p1-r0
9.2_p1-r1
9.2_p1-r2
9.2_p1-r3
9.2_p1-r4
9.3_p1-r0
9.3_p1-r1
9.3_p1-r2
9.3_p1-r3
9.3_p1-r4
9.3_p1-r5
9.3_p1-r6
9.3_p1-r7
9.3_p2-r0
9.3_p2-r1
9.3_p2-r2
9.4_p1-r0
9.5_p1-r0
9.6_p1-r0
9.6_p1-r1
Alpine:v3.20 / openssh
Package
- Name
- openssh
- Purl
- pkg:apk/alpine/openssh?arch=source
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed9.7_p1-r5
Affected versions
5.*
5.1p1-r0
5.1_p1-r1
5.1_p1-r2
5.2_p1-r0
5.2_p1-r1
5.2_p1-r2
5.2_p1-r3
5.3_p1-r3
5.4_p1-r0
5.4_p1-r1
5.4_p1-r2
5.4_p1-r3
5.5_p1-r0
5.6_p1-r0
5.6_p1-r1
5.8_p1-r0
5.8_p1-r1
5.8_p1-r2
5.8_p2-r0
5.8_p2-r1
5.8_p2-r2
5.9_p1-r0
5.9_p1-r1
5.9_p1-r2
6.*
6.0_p1-r0
6.1_p1-r0
6.1_p1-r1
6.1_p1-r2
6.2_p1-r0
6.2_p2-r0
6.2_p2-r1
6.2_p2-r2
6.3_p1-r0
6.3_p1-r1
6.3_p1-r2
6.4_p1-r0
6.4_p1-r1
6.6_p1-r0
6.6_p1-r1
6.6_p1-r2
6.6_p1-r3
6.6_p1-r4
6.6_p1-r5
6.6_p1-r6
6.7_p1-r0
6.8_p1-r0
6.8_p1-r1
6.8_p1-r2
6.9_p1-r0
6.9_p1-r1
6.9_p1-r2
6.9_p1-r3
6.9_p1-r4
6.9_p1-r5
7.*
7.1_p1-r0
7.1_p1-r1
7.1_p2-r0
7.2_p1-r0
7.2_p2-r0
7.2_p2-r1
7.3_p1-r0
7.3_p1-r1
7.3_p1-r2
7.4_p1-r0
7.4_p1-r1
7.4_p1-r2
7.5_p1-r0
7.5_p1-r1
7.5_p1-r2
7.5_p1-r3
7.5_p1-r4
7.5_p1-r5
7.5_p1-r6
7.5_p1-r7
7.5_p1-r8
7.6_p1-r0
7.6_p1-r1
7.7_p1-r0
7.7_p1-r1
7.7_p1-r2
7.7_p1-r3
7.7_p1-r4
7.8_p1-r0
7.9_p1-r0
7.9_p1-r1
7.9_p1-r2
7.9_p1-r3
7.9_p1-r4
7.9_p1-r5
8.*
8.0_p1-r0
8.0_p1-r1
8.0_p1-r2
8.1_p1-r0
8.2_p1-r0
8.3_p1-r0
8.4_p1-r0
8.4_p1-r1
8.4_p1-r2
8.4_p1-r3
8.5_p1-r0
8.5_p1-r1
8.5_p1-r2
8.6_p1-r0
8.6_p1-r1
8.6_p1-r2
8.6_p1-r3
8.6_p1-r4
8.8_p1-r0
8.8_p1-r1
8.8_p1-r2
8.8_p1-r3
8.8_p1-r4
8.9_p1-r0
9.*
9.0_p1-r0
9.0_p1-r1
9.0_p1-r2
9.0_p1-r3
9.0_p1-r4
9.1_p1-r0
9.1_p1-r1
9.2_p1-r0
9.2_p1-r1
9.2_p1-r2
9.2_p1-r3
9.2_p1-r4
9.3_p1-r0
9.3_p1-r1
9.3_p1-r2
9.3_p1-r3
9.3_p1-r4
9.3_p1-r5
9.3_p1-r6
9.3_p1-r7
9.3_p2-r0
9.3_p2-r1
9.3_p2-r2
9.4_p1-r0
9.5_p1-r0
9.6_p1-r0
9.7_p1-r0
9.7_p1-r1
9.7_p1-r2
9.7_p1-r3
9.7_p1-r4
Alpine:v3.21 / openssh
Package
- Name
- openssh
- Purl
- pkg:apk/alpine/openssh?arch=source
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed9.9_p2-r0
Affected versions
5.*
5.1p1-r0
5.1_p1-r1
5.1_p1-r2
5.2_p1-r0
5.2_p1-r1
5.2_p1-r2
5.2_p1-r3
5.3_p1-r3
5.4_p1-r0
5.4_p1-r1
5.4_p1-r2
5.4_p1-r3
5.5_p1-r0
5.6_p1-r0
5.6_p1-r1
5.8_p1-r0
5.8_p1-r1
5.8_p1-r2
5.8_p2-r0
5.8_p2-r1
5.8_p2-r2
5.9_p1-r0
5.9_p1-r1
5.9_p1-r2
6.*
6.0_p1-r0
6.1_p1-r0
6.1_p1-r1
6.1_p1-r2
6.2_p1-r0
6.2_p2-r0
6.2_p2-r1
6.2_p2-r2
6.3_p1-r0
6.3_p1-r1
6.3_p1-r2
6.4_p1-r0
6.4_p1-r1
6.6_p1-r0
6.6_p1-r1
6.6_p1-r2
6.6_p1-r3
6.6_p1-r4
6.6_p1-r5
6.6_p1-r6
6.7_p1-r0
6.8_p1-r0
6.8_p1-r1
6.8_p1-r2
6.9_p1-r0
6.9_p1-r1
6.9_p1-r2
6.9_p1-r3
6.9_p1-r4
6.9_p1-r5
7.*
7.1_p1-r0
7.1_p1-r1
7.1_p2-r0
7.2_p1-r0
7.2_p2-r0
7.2_p2-r1
7.3_p1-r0
7.3_p1-r1
7.3_p1-r2
7.4_p1-r0
7.4_p1-r1
7.4_p1-r2
7.5_p1-r0
7.5_p1-r1
7.5_p1-r2
7.5_p1-r3
7.5_p1-r4
7.5_p1-r5
7.5_p1-r6
7.5_p1-r7
7.5_p1-r8
7.6_p1-r0
7.6_p1-r1
7.7_p1-r0
7.7_p1-r1
7.7_p1-r2
7.7_p1-r3
7.7_p1-r4
7.8_p1-r0
7.9_p1-r0
7.9_p1-r1
7.9_p1-r2
7.9_p1-r3
7.9_p1-r4
7.9_p1-r5
8.*
8.0_p1-r0
8.0_p1-r1
8.0_p1-r2
8.1_p1-r0
8.2_p1-r0
8.3_p1-r0
8.4_p1-r0
8.4_p1-r1
8.4_p1-r2
8.4_p1-r3
8.5_p1-r0
8.5_p1-r1
8.5_p1-r2
8.6_p1-r0
8.6_p1-r1
8.6_p1-r2
8.6_p1-r3
8.6_p1-r4
8.8_p1-r0
8.8_p1-r1
8.8_p1-r2
8.8_p1-r3
8.8_p1-r4
8.9_p1-r0
9.*
9.0_p1-r0
9.0_p1-r1
9.0_p1-r2
9.0_p1-r3
9.0_p1-r4
9.1_p1-r0
9.1_p1-r1
9.2_p1-r0
9.2_p1-r1
9.2_p1-r2
9.2_p1-r3
9.2_p1-r4
9.3_p1-r0
9.3_p1-r1
9.3_p1-r2
9.3_p1-r3
9.3_p1-r4
9.3_p1-r5
9.3_p1-r6
9.3_p1-r7
9.3_p2-r0
9.3_p2-r1
9.3_p2-r2
9.4_p1-r0
9.5_p1-r0
9.6_p1-r0
9.7_p1-r0
9.7_p1-r1
9.7_p1-r2
9.7_p1-r3
9.8_p1-r0
9.8_p1-r1
9.9_p1-r0
9.9_p1-r1
9.9_p1-r2
Debian:13 / openssh
Package
- Name
- openssh
- Purl
- pkg:deb/debian/openssh?arch=source
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed1:9.9p2-1
Affected versions
1:9.*
1:9.2p1-2
1:9.3p1-1
1:9.3p1-1+loong64
1:9.3p2-1
1:9.4p1-1
1:9.5p1-1
1:9.5p1-2
1:9.6p1-1
1:9.6p1-2
1:9.6p1-3
1:9.6p1-4
1:9.6p1-5
1:9.7p1-1
1:9.7p1-2
1:9.7p1-3
1:9.7p1-3+hurd.1
1:9.7p1-4
1:9.7p1-5
1:9.7p1-6
1:9.7p1-7
1:9.8p1-1
1:9.8p1-2
1:9.8p1-3
1:9.8p1-4
1:9.8p1-7
1:9.8p1-8
1:9.9p1-1
1:9.9p1-2
1:9.9p1-3
1:9.9p1-3+hurd.1