CVE catalog
CVE-2021-41099
redis: CVE-2021-41099
- Severity
- High · CVSS 7.5
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 3.65% · Oct 25, 2026
Redis is an open source, in-memory database that persists on disk. An integer overflow bug in the underlying string library can be used to corrupt the heap and potentially result with denial of service or remote code execution. The vulnerability involves changing the default proto-max-bulk-len configuration parameter to a very large value and constructing specially crafted network payloads or commands. The problem is fixed in Redis versions 6.2.6, 6.0.16 and 5.0.14. An additional workaround to mitigate the problem without patching the redis-server executable is to prevent users from modifying the proto-max-bulk-len configuration parameter. This can be done using ACL to restrict unprivileged users from using the CONFIG SET command.
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 |
| Alpine | redis | 3.11 | 5.0.14-r0 | fixed |
| Alpine | redis | 3.12 | 5.0.14-r0 | fixed |
| Alpine | redis | 3.13 | 6.0.16-r0 | fixed |
| Alpine | redis | 3.14 | 6.2.6-r0 | fixed |
| Alpine | redis | 3.15 | 6.2.6-r0 | fixed |
| Alpine | redis | 3.16 | 6.2.6-r0 | fixed |
| Alpine | redis | 3.17 | 6.2.6-r0 | fixed |
| Alpine | redis | 3.18 | 6.2.6-r0 | fixed |
| Alpine | redis | 3.19 | 6.2.6-r0 | fixed |
| Ubuntu | redis | pro | 5:5.0.5-2build1 | vulnerable |
| Ubuntu | redis | pro | 5:5.0.6-1 | vulnerable |
| Ubuntu | redis | pro | 5:5.0.7-1 | vulnerable |
| Ubuntu | redis | pro | 5:5.0.7-2 | vulnerable |
| Ubuntu | redis | pro | 5:5.0.7-2ubuntu0.1~esm1 | vulnerable |
| Ubuntu | redis | pro | 5:5.0.7-2ubuntu0.1 | vulnerable |
| Ubuntu | redis | pro | 5:5.0.7-2ubuntu0.1+esm1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | redis | source | sid | 5:6.0.16-1 | not yet assigned | Not reported | Not reported |
| Debian | redis | source | forky | 5:6.0.16-1 | not yet assigned | Not reported | Not reported |
| Debian | redis | source | trixie | 5:6.0.16-1 | not yet assigned | Not reported | Not reported |
| Debian | redis | source | bookworm | 5:6.0.16-1 | not yet assigned | Not reported | Not reported |
| Alpine | redis | apk | 3.11 | 5.0.14-r0 | Not reported | ALPINE-CVE-2021-41099 | Not reported |
| Alpine | redis | apk | 3.12 | 5.0.14-r0 | Not reported | ALPINE-CVE-2021-41099 | Not reported |
| Alpine | redis | apk | 3.13 | 6.0.16-r0 | Not reported | ALPINE-CVE-2021-41099 | Not reported |
| Alpine | redis | apk | 3.14 | 6.2.6-r0 | Not reported | ALPINE-CVE-2021-41099 | Not reported |
| Alpine | redis | apk | 3.15 | 6.2.6-r0 | Not reported | ALPINE-CVE-2021-41099 | Not reported |
| Alpine | redis | apk | 3.16 | 6.2.6-r0 | Not reported | ALPINE-CVE-2021-41099 | Not reported |
| Alpine | redis | apk | 3.17 | 6.2.6-r0 | Not reported | ALPINE-CVE-2021-41099 | Not reported |
| Alpine | redis | apk | 3.18 | 6.2.6-r0 | Not reported | ALPINE-CVE-2021-41099 | Not reported |
| Alpine | redis | apk | 3.19 | 6.2.6-r0 | Not reported | ALPINE-CVE-2021-41099 | Not reported |
| Ubuntu | redis | deb | pro | 5:5.0.7-2ubuntu0.1+esm1 | Not reported | UBUNTU-CVE-2021-41099 | Not reported |
OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.
[Debian 12 (Bookworm)]
- [redis]Unknown
Details (4)
5:7.0.15-1~deb12u7· all · bookwormFixed · Fixed:
5:6.0.16-1dsa · redis · debian · bookworm; dsa · redis · debian · 12
5:7.0.15-1~deb12u7· all · bookwormFixed · Fixed:
5:6.0.16-1dsa · redis · debian · bookworm; dsa · redis · debian · 12
5:7.0.15-1~deb12u9· all · bookworm-securityFixed · Fixed:
5:6.0.16-1dsa · redis · debian · bookworm; dsa · redis · debian · 12
5:7.0.15-1~deb12u9· all · bookworm-securityFixed · Fixed:
5:6.0.16-1dsa · redis · debian · bookworm; dsa · redis · debian · 12
- [redis-sentinel]Unknown
Source package: [redis]
Details (4)
5:7.0.15-1~deb12u7· amd64 · bookwormFixed · Fixed:
5:6.0.16-1dsa · redis · debian · bookworm; dsa · redis · debian · 12
5:7.0.15-1~deb12u7· arm64 · bookwormFixed · Fixed:
5:6.0.16-1dsa · redis · debian · bookworm; dsa · redis · debian · 12
5:7.0.15-1~deb12u9· amd64 · bookworm-securityFixed · Fixed:
5:6.0.16-1dsa · redis · debian · bookworm; dsa · redis · debian · 12
5:7.0.15-1~deb12u9· arm64 · bookworm-securityFixed · Fixed:
5:6.0.16-1dsa · redis · debian · bookworm; dsa · redis · debian · 12
- [redis-server]Unknown
Source package: [redis]
Details (4)
5:7.0.15-1~deb12u7· amd64 · bookwormFixed · Fixed:
5:6.0.16-1dsa · redis · debian · bookworm; dsa · redis · debian · 12
5:7.0.15-1~deb12u7· arm64 · bookwormFixed · Fixed:
5:6.0.16-1dsa · redis · debian · bookworm; dsa · redis · debian · 12
5:7.0.15-1~deb12u9· amd64 · bookworm-securityFixed · Fixed:
5:6.0.16-1dsa · redis · debian · bookworm; dsa · redis · debian · 12
5:7.0.15-1~deb12u9· arm64 · bookworm-securityFixed · Fixed:
5:6.0.16-1dsa · redis · debian · bookworm; dsa · redis · debian · 12
- [redis-tools]Unknown
Source package: [redis]
Details (4)
5:7.0.15-1~deb12u7· amd64 · bookwormFixed · Fixed:
5:6.0.16-1dsa · redis · debian · bookworm; dsa · redis · debian · 12
5:7.0.15-1~deb12u7· arm64 · bookwormFixed · Fixed:
5:6.0.16-1dsa · redis · debian · bookworm; dsa · redis · debian · 12
5:7.0.15-1~deb12u9· amd64 · bookworm-securityFixed · Fixed:
5:6.0.16-1dsa · redis · debian · bookworm; dsa · redis · debian · 12
5:7.0.15-1~deb12u9· arm64 · bookworm-securityFixed · Fixed:
5:6.0.16-1dsa · redis · debian · bookworm; dsa · redis · debian · 12
[Debian 13 (Trixie)]
- [redis]Unknown
Details (5)
5:8.0.2-3+deb13u2· all · trixieFixed · Fixed:
5:6.0.16-1dsa · redis · debian · 13
5:8.0.2-3+deb13u2· all · trixieFixed · Fixed:
5:6.0.16-1dsa · redis · debian · 13
5:8.0.2-3+deb13u2· all · trixie-securityFixed · Fixed:
5:6.0.16-1dsa · redis · debian · 13
5:8.0.2-3+deb13u2· all · trixie-security · Historical versionFixed · Fixed:
5:6.0.16-1dsa · redis · debian · 13
5:8.0.2-3+deb13u3· all · trixie-securityFixed · Fixed:
5:6.0.16-1dsa · redis · debian · 13
- [redis-sentinel]Unknown
Source package: [redis]
Details (5)
5:8.0.2-3+deb13u2· amd64 · trixieFixed · Fixed:
5:6.0.16-1dsa · redis · debian · 13
5:8.0.2-3+deb13u2· arm64 · trixieFixed · Fixed:
5:6.0.16-1dsa · redis · debian · 13
5:8.0.2-3+deb13u2· amd64 · trixie-security · Historical versionFixed · Fixed:
5:6.0.16-1dsa · redis · debian · 13
5:8.0.2-3+deb13u2· arm64 · trixie-securityFixed · Fixed:
5:6.0.16-1dsa · redis · debian · 13
5:8.0.2-3+deb13u3· amd64 · trixie-securityFixed · Fixed:
5:6.0.16-1dsa · redis · debian · 13
- [redis-server]Unknown
Source package: [redis]
Details (5)
5:8.0.2-3+deb13u2· amd64 · trixieFixed · Fixed:
5:6.0.16-1dsa · redis · debian · 13
5:8.0.2-3+deb13u2· arm64 · trixieFixed · Fixed:
5:6.0.16-1dsa · redis · debian · 13
5:8.0.2-3+deb13u2· amd64 · trixie-security · Historical versionFixed · Fixed:
5:6.0.16-1dsa · redis · debian · 13
5:8.0.2-3+deb13u2· arm64 · trixie-securityFixed · Fixed:
5:6.0.16-1dsa · redis · debian · 13
5:8.0.2-3+deb13u3· amd64 · trixie-securityFixed · Fixed:
5:6.0.16-1dsa · redis · debian · 13
- [redis-tools]Unknown
Source package: [redis]
Details (5)
5:8.0.2-3+deb13u2· amd64 · trixieFixed · Fixed:
5:6.0.16-1dsa · redis · debian · 13
5:8.0.2-3+deb13u2· arm64 · trixieFixed · Fixed:
5:6.0.16-1dsa · redis · debian · 13
5:8.0.2-3+deb13u2· amd64 · trixie-security · Historical versionFixed · Fixed:
5:6.0.16-1dsa · redis · debian · 13
5:8.0.2-3+deb13u2· arm64 · trixie-securityFixed · Fixed:
5:6.0.16-1dsa · redis · debian · 13
5:8.0.2-3+deb13u3· amd64 · trixie-securityFixed · Fixed:
5:6.0.16-1dsa · redis · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/rhsa-2021_3918.json]
- [https://osv.dev/vulnerability/ALPINE-CVE-2021-41099]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2021-41099]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2021-41099]
- [https://security-tracker.debian.org/tracker/CVE-2021-41099]
- [https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-41099.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2021/wid-sec-w-2022-1579.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]