CVE-2021-40149Public exploitNetwork attack vector

TLS private-key disclosure via exposed web file

Published Jul 17, 2022 · Updated Aug 4, 2024

Information disclosure in Reolink E1 Zoom firmware 3.0.0.716 and earlier allows remote attackers to retrieve the camera's TLS private key. The embedded web server places self.key beneath its document root and serves it through the unauthenticated /self.key URI. Network access to the camera is sufficient to obtain the key; subsequent traffic compromise depends on access to encrypted camera traffic.

CVSS severity5.9
Medium
EPSS probability7.93%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Reolink E1 Zoom firmware 3.0.0.716 and earlier allows remote attackers to retrieve the camera's TLS private key. The embedded web server places self.key beneath its document root and serves it through the unauthenticated /self.key URI. Network access to the camera is sufficient to obtain the key; subsequent traffic compromise depends on access to encrypted camera traffic.

The record

CVE
CVE-2021-40149
Published
Jul 17, 2022
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-552, T1552.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 17, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.9NIST NVDCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
7.5RCE SecurityCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-552Files or Directories Accessible to External Parties
T1552.001Unsecured Credentials: Credentials In Files

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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