CVE-2021-40149

MEDIUMNVD 5.95.9—
EchelonGraph scoreMEDIUM confidence

Score 5.9 from GitHub Security Advisory published 2022-07-18. NVD baseline CVSS 5.9; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
5.9
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 7%CVSS: 5.9Exploit: NoneExposed: 0

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

The web server of the E1 Zoom camera through 3.0.0.716 discloses its SSL private key via the root web server directory. In this way an attacker can download the entire key via the /self.key URI.

CVSS v3
5.9
EG Score
5.9(medium)
EG Risk
—
EPSS
93.8%
KEV
Not listed

Published

July 17, 2022

Last Modified

November 21, 2024

References (6)

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 11× 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. 2026-07-22 22:50 UTCEG score recompute
  2. 2026-07-22 14:06 UTCEPSS rescore
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  54. 2026-06-01 13:50 UTCEPSS rescore
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  56. 2026-05-29 13:42 UTCEPSS rescore
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  59. 2026-05-27 13:39 UTCEPSS rescore
  60. 2026-05-27 13:39 UTCEPSS rescore
  61. 2026-05-25 18:48 UTCEG score recompute
  62. 2026-05-25 18:48 UTCGHSA enrichment
  63. 2026-05-25 08:16 UTCOSV refresh

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-2021-40149.yaml
    First seen Jan 1, 2021

    Reolink E1 Zoom Camera <=3.0.0.716 - Private Key Disclosure

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2021-40149?
CVE-2021-40149 is a medium vulnerability published on July 17, 2022. The web server of the E1 Zoom camera through 3.0.0.716 discloses its SSL private key via the root web server directory. In this way an attacker can download the entire key via the /self.key URI.
When was CVE-2021-40149 disclosed?
CVE-2021-40149 was first published in the National Vulnerability Database on July 17, 2022, 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-2021-40149 actively exploited?
CVE-2021-40149 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 93.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2021-40149?
CVE-2021-40149 has a CVSS v3 base score of 5.9 (NVD).
How do I remediate CVE-2021-40149?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-40149, 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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