CVE-2021-37625

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 0.1%, top 79% 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: 1%CVSS: 7.5Exploit: NoneExposed: 0

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

Skytable is an open source NoSQL database. In versions prior to 0.6.4 an incorrect check of return value of the accept function in the run-loop for a TCP socket/TLS socket/TCP+TLS multi-socket causes an early exit from the run loop that should continue infinitely unless terminated by a local user, effectively causing the whole database server to shut down. This has severe impact and can be used to easily cause DoS attacks without the need to use much bandwidth. The attack vectors include using an incomplete TLS connection for example by not providing the certificate for the connection and using a specially crafted TCP packet that triggers the application layer backoff algorithm.

CVSS v3
7.5
EG Score
7.5(medium)
EPSS
56.8%
KEV
Not listed

Published

August 5, 2021

Last Modified

November 21, 2024

References (6)

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 9× in last 7d / 45× 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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  15. 2026-06-30 20:30 UTCOSV refresh
  16. 2026-06-29 14:04 UTCEPSS rescore
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  1. 2026-06-23 21:31 UTCEPSS rescore
  2. 2026-06-22 14:24 UTCEPSS rescore
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  4. 2026-06-21 14:55 UTCEPSS rescore
  5. 2026-06-21 01:58 UTCEPSS rescore
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  7. 2026-06-19 19:24 UTCEPSS rescore
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  9. 2026-06-18 17:51 UTCEPSS rescore
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  18. 2026-06-13 00:44 UTCOSV refresh
  19. 2026-06-12 23:10 UTCEPSS rescore
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  21. 2026-06-11 13:58 UTCEPSS rescore
  22. 2026-06-10 22:16 UTCEPSS rescore
  23. 2026-06-10 13:20 UTCEPSS rescore
  24. 2026-06-08 14:15 UTCEPSS rescore
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  40. 2026-05-31 00:15 UTCEPSS rescore
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  42. 2026-05-29 13:42 UTCEPSS rescore
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  44. 2026-05-28 13:43 UTCEPSS rescore
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  46. 2026-05-27 13:39 UTCEPSS rescore
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  48. 2026-05-27 13:39 UTCEPSS rescore
  49. 2026-05-26 13:42 UTCEPSS rescore
  50. 2026-05-26 12:36 UTCEG score recompute
  51. 2026-05-26 07:17 UTCEPSS rescore
  52. 2026-05-26 07:17 UTCEPSS rescore
  53. 2026-05-26 07:17 UTCEPSS rescore

Frequently asked(5)

What is CVE-2021-37625?
CVE-2021-37625 is a high vulnerability published on August 5, 2021. Skytable is an open source NoSQL database. In versions prior to 0.6.4 an incorrect check of return value of the accept function in the run-loop for a TCP socket/TLS socket/TCP+TLS multi-socket causes an early exit from the run loop that should continue infinitely unless terminated by a local user,…
When was CVE-2021-37625 disclosed?
CVE-2021-37625 was first published in the National Vulnerability Database on August 5, 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-2021-37625 actively exploited?
CVE-2021-37625 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 56.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2021-37625?
CVE-2021-37625 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2021-37625?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-37625, 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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