CVE-2021-32625

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 2.7%, top 14% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
7.5
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 4%CVSS: 7.5Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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. This is a result of an incomplete fix by CVE-2021-29477. The problem is fixed in version 6.2.4 and 6.0.14. 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. On 64 bit systems which have the fixes of CVE-2021-29477 (6.2.3 or 6.0.13), it is sufficient to make sure that the proto-max-bulk-len config parameter is smaller than 2GB (default is 512MB).

CVSS v3
7.5
EG Score
7.5(medium)
EPSS
89.8%
KEV
Not listed

Published

June 2, 2021

Last Modified

November 21, 2024

References (10)

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 8× in last 7d / 42× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-11 08:25 UTCEPSS rescore
  2. 2026-07-11 08:25 UTCEPSS rescore
  3. 2026-07-09 19:07 UTCEPSS rescore
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  11. 2026-07-01 15:04 UTCEPSS rescore
  12. 2026-07-01 02:18 UTCOSV refresh
  13. 2026-06-30 23:20 UTCEPSS rescore
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  1. 2026-06-21 14:55 UTCEPSS rescore
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  4. 2026-06-19 19:24 UTCEPSS rescore
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  6. 2026-06-18 17:51 UTCEPSS rescore
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  11. 2026-06-15 17:46 UTCEPSS rescore
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  15. 2026-06-13 04:43 UTCOSV refresh
  16. 2026-06-12 23:10 UTCEPSS rescore
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  18. 2026-06-11 13:58 UTCEPSS rescore
  19. 2026-06-10 22:16 UTCEPSS rescore
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  21. 2026-06-07 15:23 UTCEPSS rescore
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  23. 2026-06-06 13:46 UTCEPSS rescore
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  26. 2026-06-05 22:45 UTCEPSS rescore
  27. 2026-06-05 06:09 UTCEPSS rescore
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  37. 2026-05-29 13:42 UTCEPSS rescore
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  39. 2026-05-28 13:43 UTCEPSS rescore
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  41. 2026-05-27 13:39 UTCEPSS rescore
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  43. 2026-05-27 13:39 UTCEPSS rescore
  44. 2026-05-26 15:38 UTCEG score recompute
  45. 2026-05-26 13:42 UTCEPSS rescore
  46. 2026-05-26 07:17 UTCEPSS rescore
  47. 2026-05-26 07:17 UTCEPSS rescore
  48. 2026-05-26 07:17 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2021-32625?
CVE-2021-32625 is a high vulnerability published on June 2, 2021. 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. This…
When was CVE-2021-32625 disclosed?
CVE-2021-32625 was first published in the National Vulnerability Database on June 2, 2021, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2021-32625 actively exploited?
CVE-2021-32625 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 89.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2021-32625?
CVE-2021-32625 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2021-32625?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-32625, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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