CVE-2021-27358

HIGHNVD 7.58.9▲
EchelonGraph scoreHIGH confidence

Score elevated to 8.9 because EPSS predicts 83% probability of exploitation within the next 30 days (top 0.4% of all CVEs). NVD baseline CVSS 7.5 retained for reference. Confidence: see factors.

Triggered by: EPSS exploit prediction ≥85%
Sources: epss, nvd
Elevated
8.9EG
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 83%
CISA-KEV: Not listedEPSS PROB: 83%CVSS: 7.5Exploit: Elevated riskExposed: 0

A fix is available — apply it.

The snapshot feature in Grafana 6.7.3 through 7.4.1 can allow an unauthenticated remote attackers to trigger a Denial of Service via a remote API call if a commonly used configuration is set.

CVSS v3
7.5
EG Score
8.9(high)
EG Risk
78(Track)
EG Risk 78/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity89% × 45%
Exploitation83% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
83%
EPSS %ILE
100%
KEV
Not listed

Published

March 18, 2021

Last Modified

November 21, 2024

References (8)

Vendor Advisories for CVE-2021-27358(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatgrafana-0:7.5.9-4.el82021-11-09redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(1 across 1 ecosystem)
Go(1)
PackageVulnerable rangeFixed inDependents
github.com/grafana/grafana—7.4.2—

Data Freshness Timeline

(refreshed 7× in last 7d / 19× 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. 2026-08-20 22:52 UTCEPSS rescore
  2. 2026-08-20 06:55 UTCOSV refresh
  3. 2026-08-19 17:01 UTCEPSS rescore
  4. 2026-08-18 13:45 UTCEPSS rescore
  5. 2026-08-17 13:44 UTCEPSS rescore
  6. 2026-08-16 02:11 UTCEPSS rescore
  7. 2026-08-16 02:11 UTCEPSS rescore
  8. 2026-08-13 21:57 UTCEPSS rescore
  9. 2026-08-11 13:38 UTCEPSS rescore
  10. 2026-08-06 13:43 UTCEPSS rescore
  11. 2026-08-05 02:10 UTCOSV refresh
  12. 2026-07-26 14:52 UTCEPSS rescore
  13. 2026-07-26 14:52 UTCEPSS rescore
  14. 2026-07-25 14:15 UTCEPSS rescore
  15. 2026-07-24 14:15 UTCEPSS rescore
  16. 2026-07-23 01:59 UTCEG score recompute▲ 1.40
  17. 2026-07-22 22:46 UTCEG score recompute▼ 1.50
  18. 2026-07-22 14:06 UTCEPSS rescore
  19. 2026-07-22 14:06 UTCEPSS rescore
  20. 2026-07-21 15:22 UTCEPSS rescore
  21. 2026-07-21 15:22 UTCEPSS rescore
  22. 2026-07-20 17:05 UTCEPSS rescore
  23. 2026-07-19 02:27 UTCEPSS rescore
  24. 2026-07-19 02:27 UTCEPSS rescore
  25. 2026-07-18 23:59 UTCOSV refresh
Show 30 more
  1. 2026-07-15 16:55 UTCEPSS rescore
  2. 2026-07-15 16:55 UTCEPSS rescore
  3. 2026-07-12 05:44 UTCEPSS rescore
  4. 2026-07-12 05:44 UTCEPSS rescore
  5. 2026-07-09 19:07 UTCEPSS rescore
  6. 2026-07-05 02:28 UTCEPSS rescore
  7. 2026-07-02 16:57 UTCEPSS rescore
  8. 2026-07-01 06:48 UTCOSV refresh
  9. 2026-06-28 04:54 UTCEPSS rescore
  10. 2026-06-28 04:54 UTCEPSS rescore
  11. 2026-06-24 14:03 UTCEPSS rescore
  12. 2026-06-24 14:03 UTCEPSS rescore
  13. 2026-06-23 21:31 UTCEPSS rescore
  14. 2026-06-23 21:31 UTCEPSS rescore
  15. 2026-06-21 01:58 UTCEPSS rescore
  16. 2026-06-21 01:58 UTCEPSS rescore
  17. 2026-06-16 17:51 UTCEPSS rescore
  18. 2026-06-15 17:46 UTCEPSS rescore
  19. 2026-06-13 11:13 UTCOSV refresh
  20. 2026-06-12 23:10 UTCEPSS rescore
  21. 2026-06-11 13:58 UTCEPSS rescore
  22. 2026-06-01 13:50 UTCEPSS rescore
  23. 2026-06-01 13:50 UTCEPSS rescore
  24. 2026-05-31 00:15 UTCEPSS rescore
  25. 2026-05-28 13:43 UTCEPSS rescore
  26. 2026-05-28 13:43 UTCEPSS rescore
  27. 2026-05-26 19:37 UTCEG score recompute
  28. 2026-05-26 19:37 UTCVendor advisory
  29. 2026-05-26 07:17 UTCEPSS rescore
  30. 2026-05-26 07:17 UTCEPSS rescore

Publicly available exploits

(1 reference)

Working exploit code is in the public domain. Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Nucleihttp/cves/2021/CVE-2021-27358.yaml
    First seen Jan 1, 2021

    Grafana Unauthenticated Snapshot Creation

    Open source ↗

Related CVEs(same vendor)

Frequently asked(5)

What is CVE-2021-27358?
CVE-2021-27358 is a high vulnerability published on March 18, 2021. The snapshot feature in Grafana 6.7.3 through 7.4.1 can allow an unauthenticated remote attackers to trigger a Denial of Service via a remote API call if a commonly used configuration is set.
When was CVE-2021-27358 disclosed?
CVE-2021-27358 was first published in the National Vulnerability Database on March 18, 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-2021-27358 actively exploited?
CVE-2021-27358 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 83% probability of exploitation in the next 30 days, which ranks it in the top 0.3% of all scored CVEs.
What is the CVSS score of CVE-2021-27358?
CVE-2021-27358 has a CVSS v3 base score of 7.5 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 8.9.
How do I remediate CVE-2021-27358?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-27358, 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.

Dependency Blast Radius

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