CVE-2021-29477
Vulnerability in the STRALGO LCS command
- Published
- Updated
- Reserved
- Assigned by
- GitHub_M
Description
Redis is an open source (BSD licensed), in-memory data structure store, used as a database, cache, and message broker. An integer overflow bug in Redis version 6.0 or newer could be exploited using the `STRALGO LCS` command to corrupt the heap and potentially result with remote code execution. The problem is fixed in version 6.2.3 and 6.0.13. An additional workaround to mitigate the problem without patching the redis-server executable is to use ACL configuration to prevent clients from using the `STRALGO LCS` command.
Timeline
ID reserved
By GitHub_M
- 35 days later
· 35 days later
Published
- 3 years later
· 3 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Modified | 3.1 | High8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 4.0% · top 9.4% of all CVEs (7 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Weakness
Affected products
References (7)
- https://github.com/redis/redis/security/advisories/GHSA-vqxj-26vj-996g (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://redis.io/ (opens in a new tab)x_refsource_MISCx_transferred
- FEDORA-2021-3b267a756c (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- FEDORA-2021-8b19c99d6a (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- FEDORA-2021-916f861096 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- FEDORA-2021-0ad4bec5b1 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- GLSA-202107-20 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2021-29477)Record last updated .