
CVE catalog
CVE-2026-21863
Valkey is a distributed key-value database. Prior to versions 9.0.2, 8.1.6, 8.0.7, and 7.2.12, a malicious actor with access to the Valkey clusterbus port can send an invalid packet that may cause an
- Severity
- High · CVSS 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.85% · Oct 25, 2026
Valkey is a distributed key-value database. Prior to versions 9.0.2, 8.1.6, 8.0.7, and 7.2.12, a malicious actor with access to the Valkey clusterbus port can send an invalid packet that may cause an out bound read, which might result in the system crashing. The Valkey clusterbus packet processing code does not validate that a clusterbus ping extension packet is located within buffer of the clusterbus packet before attempting to read it. Versions 9.0.2, 8.1.6, 8.0.7, and 7.2.12 fix the issue. As an additional mitigation, don't expose the cluster bus connection directly to end users, and protect the connection with its own network ACLs.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | redis | sid | 5:8.0.6-3 | fixed |
| Debian | redis | forky | 5:8.0.6-3 | fixed |
| Debian | redis | trixie | 5:8.0.2-3+deb13u2 | fixed |
| Debian | redis | trixie-security | 5:8.0.2-3+deb13u3 | fixed |
| Debian | redis | bookworm | 5:7.0.15-1~deb12u7 | fixed |
| Debian | redis | bookworm-security | 5:7.0.15-1~deb12u10 | fixed |
| Cpe | valkey | Not reported | 7.2.12+dfsg1-0ubuntu0.1 | fixed |
| Cpe | valkey-redis-compat | Not reported | 7.2.12+dfsg1-0ubuntu0.1 | fixed |
| Cpe | valkey-sentinel | Not reported | 7.2.12+dfsg1-0ubuntu0.1 | fixed |
| Cpe | valkey-server | Not reported | 7.2.12+dfsg1-0ubuntu0.1 | fixed |
| Cpe | valkey-tools | Not reported | 7.2.12+dfsg1-0ubuntu0.1 | fixed |
| Alpine | valkey | 3.21 | 7.2.12-r0 | fixed |
| Alpine | valkey | 3.22 | 8.1.6-r0 | fixed |
| Alpine | valkey | 3.23 | 9.0.3-r0 | fixed |
| Alpine | valkey | 3.24 | 9.0.3-r0 | fixed |
| Ubuntu | valkey | 24.04 | 7.2.5+dfsg1-2ubuntu4~24.04.1 | vulnerable |
| Ubuntu | valkey | 24.04 | 7.2.7+dfsg1-0ubuntu0.24.04.1 | vulnerable |
| Ubuntu | valkey | 24.04 | 7.2.8+dfsg1-0ubuntu0.24.04.1 | vulnerable |
| Ubuntu | valkey | 24.04 | 7.2.8+dfsg1-0ubuntu0.24.04.2 | vulnerable |
| Ubuntu | valkey | 24.04 | 7.2.8+dfsg1-0ubuntu0.24.04.3 | vulnerable |
| Ubuntu | valkey | 24.04 | 7.2.10+dfsg1-0ubuntu0.1 | vulnerable |
| Ubuntu | valkey | 24.04 | 7.2.11+dfsg1-0ubuntu0.1 | vulnerable |
| Ubuntu | valkey | 24.04 | 7.2.11+dfsg1-0ubuntu0.2 | vulnerable |
| Ubuntu | valkey | 24.04 | 7.2.12+dfsg1-0ubuntu0.1 | fixed |
| Ubuntu | valkey | 25.10 | 8.0.2+dfsg1-1ubuntu1 | vulnerable |
| Ubuntu | valkey | 25.10 | 8.1.1+dfsg1-2ubuntu1 | vulnerable |
| Ubuntu | valkey | 25.10 | 8.1.3+dfsg1-0ubuntu1 | vulnerable |
| Ubuntu | valkey | 25.10 | 8.1.3+dfsg1-0ubuntu2 | vulnerable |
| Ubuntu | valkey | 25.10 | 8.1.4+dfsg1-0ubuntu0.1 | vulnerable |
| Ubuntu | valkey | 25.10 | 8.1.4+dfsg1-0ubuntu0.2 | vulnerable |
| Ubuntu | valkey | 25.10 | 8.1.6+dfsg1-0ubuntu0.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | redis | source | sid | 5:8.0.6-1 | not yet assigned | Not reported | [1132205] |
| Debian | redis | source | forky | 5:8.0.6-1 | not yet assigned | Not reported | [1132205] |
| Debian | redis | source | trixie | 5:8.0.2-3+deb13u2 | not yet assigned | Not reported | [1132205] |
| Debian | redis | source | bookworm | 5:7.0.15-1~deb12u7 | not yet assigned | Not reported | [1132205] |
| Cpe | valkey | cpe | Not reported | 7.2.12+dfsg1-0ubuntu0.1 | Not reported | Not reported | Not reported |
| Cpe | valkey-redis-compat | cpe | Not reported | 7.2.12+dfsg1-0ubuntu0.1 | Not reported | Not reported | Not reported |
| Cpe | valkey-sentinel | cpe | Not reported | 7.2.12+dfsg1-0ubuntu0.1 | Not reported | Not reported | Not reported |
| Cpe | valkey-server | cpe | Not reported | 7.2.12+dfsg1-0ubuntu0.1 | Not reported | Not reported | Not reported |
| Cpe | valkey-tools | cpe | Not reported | 7.2.12+dfsg1-0ubuntu0.1 | Not reported | Not reported | Not reported |
| Alpine | valkey | apk | 3.21 | 7.2.12-r0 | Not reported | ALPINE-CVE-2026-21863 | Not reported |
| Alpine | valkey | apk | 3.22 | 8.1.6-r0 | Not reported | ALPINE-CVE-2026-21863 | Not reported |
| Alpine | valkey | apk | 3.23 | 9.0.3-r0 | Not reported | ALPINE-CVE-2026-21863 | Not reported |
| Alpine | valkey | apk | 3.24 | 9.0.3-r0 | Not reported | ALPINE-CVE-2026-21863 | Not reported |
| Ubuntu | valkey | deb | 24.04 | 7.2.12+dfsg1-0ubuntu0.1 | Not reported | UBUNTU-CVE-2026-21863 | Not reported |
| Ubuntu | valkey | deb | 25.10 | 8.1.6+dfsg1-0ubuntu0.1 | Not reported | UBUNTU-CVE-2026-21863 | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [redis]Fixed
Details (4)
5:7.0.15-1~deb12u7· all · bookwormFixed · Fixed:
5:7.0.15-1~deb12u7nvd · redis · debian · bookworm; nvd · redis · debian · 12
5:7.0.15-1~deb12u7· all · bookwormFixed · Fixed:
5:7.0.15-1~deb12u7nvd · redis · debian · bookworm; nvd · redis · debian · 12
5:7.0.15-1~deb12u9· all · bookworm-securityFixed · Fixed:
5:7.0.15-1~deb12u7nvd · redis · debian · bookworm; nvd · redis · debian · 12
5:7.0.15-1~deb12u9· all · bookworm-securityFixed · Fixed:
5:7.0.15-1~deb12u7nvd · redis · debian · bookworm; nvd · redis · debian · 12
- [redis-sentinel]Fixed
Source package: [redis]
Details (4)
5:7.0.15-1~deb12u7· amd64 · bookwormFixed · Fixed:
5:7.0.15-1~deb12u7nvd · redis · debian · bookworm; nvd · redis · debian · 12
5:7.0.15-1~deb12u7· arm64 · bookwormFixed · Fixed:
5:7.0.15-1~deb12u7nvd · redis · debian · bookworm; nvd · redis · debian · 12
5:7.0.15-1~deb12u9· amd64 · bookworm-securityFixed · Fixed:
5:7.0.15-1~deb12u7nvd · redis · debian · bookworm; nvd · redis · debian · 12
5:7.0.15-1~deb12u9· arm64 · bookworm-securityFixed · Fixed:
5:7.0.15-1~deb12u7nvd · redis · debian · bookworm; nvd · redis · debian · 12
- [redis-server]Fixed
Source package: [redis]
Details (4)
5:7.0.15-1~deb12u7· amd64 · bookwormFixed · Fixed:
5:7.0.15-1~deb12u7nvd · redis · debian · bookworm; nvd · redis · debian · 12
5:7.0.15-1~deb12u7· arm64 · bookwormFixed · Fixed:
5:7.0.15-1~deb12u7nvd · redis · debian · bookworm; nvd · redis · debian · 12
5:7.0.15-1~deb12u9· amd64 · bookworm-securityFixed · Fixed:
5:7.0.15-1~deb12u7nvd · redis · debian · bookworm; nvd · redis · debian · 12
5:7.0.15-1~deb12u9· arm64 · bookworm-securityFixed · Fixed:
5:7.0.15-1~deb12u7nvd · redis · debian · bookworm; nvd · redis · debian · 12
- [redis-tools]Fixed
Source package: [redis]
Details (4)
5:7.0.15-1~deb12u7· amd64 · bookwormFixed · Fixed:
5:7.0.15-1~deb12u7nvd · redis · debian · bookworm; nvd · redis · debian · 12
5:7.0.15-1~deb12u7· arm64 · bookwormFixed · Fixed:
5:7.0.15-1~deb12u7nvd · redis · debian · bookworm; nvd · redis · debian · 12
5:7.0.15-1~deb12u9· amd64 · bookworm-securityFixed · Fixed:
5:7.0.15-1~deb12u7nvd · redis · debian · bookworm; nvd · redis · debian · 12
5:7.0.15-1~deb12u9· arm64 · bookworm-securityFixed · Fixed:
5:7.0.15-1~deb12u7nvd · redis · debian · bookworm; nvd · redis · debian · 12
[Debian 13 (Trixie)]
- [redis]Fixed
Details (5)
5:8.0.2-3+deb13u2· all · trixieFixed · Fixed:
5:8.0.2-3+deb13u2nvd · redis · debian · 13
5:8.0.2-3+deb13u2· all · trixieFixed · Fixed:
5:8.0.2-3+deb13u2nvd · redis · debian · 13
5:8.0.2-3+deb13u2· all · trixie-security · Historical versionFixed · Fixed:
5:8.0.2-3+deb13u2nvd · redis · debian · 13
5:8.0.2-3+deb13u2· all · trixie-securityFixed · Fixed:
5:8.0.2-3+deb13u2nvd · redis · debian · 13
5:8.0.2-3+deb13u3· all · trixie-securityFixed · Fixed:
5:8.0.2-3+deb13u2nvd · redis · debian · 13
- [redis-sentinel]Fixed
Source package: [redis]
Details (5)
5:8.0.2-3+deb13u2· amd64 · trixieFixed · Fixed:
5:8.0.2-3+deb13u2nvd · redis · debian · 13
5:8.0.2-3+deb13u2· arm64 · trixieFixed · Fixed:
5:8.0.2-3+deb13u2nvd · redis · debian · 13
5:8.0.2-3+deb13u2· amd64 · trixie-security · Historical versionFixed · Fixed:
5:8.0.2-3+deb13u2nvd · redis · debian · 13
5:8.0.2-3+deb13u2· arm64 · trixie-securityFixed · Fixed:
5:8.0.2-3+deb13u2nvd · redis · debian · 13
5:8.0.2-3+deb13u3· amd64 · trixie-securityFixed · Fixed:
5:8.0.2-3+deb13u2nvd · redis · debian · 13
- [redis-server]Fixed
Source package: [redis]
Details (5)
5:8.0.2-3+deb13u2· amd64 · trixieFixed · Fixed:
5:8.0.2-3+deb13u2nvd · redis · debian · 13
5:8.0.2-3+deb13u2· arm64 · trixieFixed · Fixed:
5:8.0.2-3+deb13u2nvd · redis · debian · 13
5:8.0.2-3+deb13u2· amd64 · trixie-security · Historical versionFixed · Fixed:
5:8.0.2-3+deb13u2nvd · redis · debian · 13
5:8.0.2-3+deb13u2· arm64 · trixie-securityFixed · Fixed:
5:8.0.2-3+deb13u2nvd · redis · debian · 13
5:8.0.2-3+deb13u3· amd64 · trixie-securityFixed · Fixed:
5:8.0.2-3+deb13u2nvd · redis · debian · 13
- [redis-tools]Fixed
Source package: [redis]
Details (5)
5:8.0.2-3+deb13u2· amd64 · trixieFixed · Fixed:
5:8.0.2-3+deb13u2nvd · redis · debian · 13
5:8.0.2-3+deb13u2· arm64 · trixieFixed · Fixed:
5:8.0.2-3+deb13u2nvd · redis · debian · 13
5:8.0.2-3+deb13u2· amd64 · trixie-security · Historical versionFixed · Fixed:
5:8.0.2-3+deb13u2nvd · redis · debian · 13
5:8.0.2-3+deb13u2· arm64 · trixie-securityFixed · Fixed:
5:8.0.2-3+deb13u2nvd · redis · debian · 13
5:8.0.2-3+deb13u3· amd64 · trixie-securityFixed · Fixed:
5:8.0.2-3+deb13u2nvd · redis · debian · 13
- [valkey-sentinel]Fixed
Source package: [valkey]
Details (5)
8.1.1+dfsg1-3+deb13u2· amd64 · trixieFixed · Fixed:
8.1.1+dfsg1-3+deb13u2nvd · valkey · debian · 13
8.1.1+dfsg1-3+deb13u2· arm64 · trixieFixed · Fixed:
8.1.1+dfsg1-3+deb13u2nvd · valkey · debian · 13
8.1.1+dfsg1-3+deb13u2· amd64 · trixie-security · Historical versionFixed · Fixed:
8.1.1+dfsg1-3+deb13u2nvd · valkey · debian · 13
8.1.1+dfsg1-3+deb13u2· arm64 · trixie-securityFixed · Fixed:
8.1.1+dfsg1-3+deb13u2nvd · valkey · debian · 13
8.1.1+dfsg1-3+deb13u3· amd64 · trixie-securityFixed · Fixed:
8.1.1+dfsg1-3+deb13u2nvd · valkey · debian · 13
- [valkey-server]Fixed
Source package: [valkey]
Details (5)
8.1.1+dfsg1-3+deb13u2· amd64 · trixieFixed · Fixed:
8.1.1+dfsg1-3+deb13u2nvd · valkey · debian · 13
8.1.1+dfsg1-3+deb13u2· arm64 · trixieFixed · Fixed:
8.1.1+dfsg1-3+deb13u2nvd · valkey · debian · 13
8.1.1+dfsg1-3+deb13u2· amd64 · trixie-security · Historical versionFixed · Fixed:
8.1.1+dfsg1-3+deb13u2nvd · valkey · debian · 13
8.1.1+dfsg1-3+deb13u2· arm64 · trixie-securityFixed · Fixed:
8.1.1+dfsg1-3+deb13u2nvd · valkey · debian · 13
8.1.1+dfsg1-3+deb13u3· amd64 · trixie-securityFixed · Fixed:
8.1.1+dfsg1-3+deb13u2nvd · valkey · debian · 13
- [valkey-tools]Fixed
Source package: [valkey]
Details (5)
8.1.1+dfsg1-3+deb13u2· amd64 · trixieFixed · Fixed:
8.1.1+dfsg1-3+deb13u2nvd · valkey · debian · 13
8.1.1+dfsg1-3+deb13u2· arm64 · trixieFixed · Fixed:
8.1.1+dfsg1-3+deb13u2nvd · valkey · debian · 13
8.1.1+dfsg1-3+deb13u2· amd64 · trixie-security · Historical versionFixed · Fixed:
8.1.1+dfsg1-3+deb13u2nvd · valkey · debian · 13
8.1.1+dfsg1-3+deb13u2· arm64 · trixie-securityFixed · Fixed:
8.1.1+dfsg1-3+deb13u2nvd · valkey · debian · 13
8.1.1+dfsg1-3+deb13u3· amd64 · trixie-securityFixed · Fixed:
8.1.1+dfsg1-3+deb13u2nvd · valkey · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2026_10266-1.json]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-21863]
- [https://osv.dev/vulnerability/ALPINE-CVE-2026-21863]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-21863]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2026-21863]
- [https://security-tracker.debian.org/tracker/CVE-2026-21863]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-21863.json]
- [https://ubuntu.com/security/notices/USN-8106-1]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-0546.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX] · [Ubuntu Security Notices (USN)]