CVE-2020-25173

Credential disclosure via hard-coded P2P key

Published Jan 26, 2021 · Updated Sep 16, 2024

Use of a hard-coded key in Reolink RLC-4XX, RLC-5XX, and RLN-X10 series allows attackers to recover credentials via the local network. The XML-based P2P control protocol encrypts every session with one embedded symmetric key, allowing captured messages to be restored to cleartext. Local-network access and an active P2P exchange are required; recovered device credentials can support later access from outside that network.

CVSS severity7.8
High
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use of a hard-coded key in Reolink RLC-4XX, RLC-5XX, and RLN-X10 series allows attackers to recover credentials via the local network. The XML-based P2P control protocol encrypts every session with one embedded symmetric key, allowing captured messages to be restored to cleartext. Local-network access and an active P2P exchange are required; recovered device credentials can support later access from outside that network.

The record

CVE
CVE-2020-25173
Published
Jan 26, 2021
Updated
Sep 16, 2024
Vendor
Reolink
Product
RLC-5XX series
Classifications
CWE-321, CWE-798, T1040
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 26, 2021CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 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?

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  1. Affected versionversion=All versions

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Reolink · RLC-5XX seriesversion=All versions
Reolink · RLC-4XX seriesversion=All versions
Reolink · RLN-X10 seriesversion=All versions

Published CVSS scores

7.8NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
4.6NVDAV:L/AC:L/Au:N/C:P/I:P/A:P

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.

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No observations available

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

Weakness, pattern, technique

CWE-321Use of Hard-coded Cryptographic Key
CWE-798Use of Hard-coded Credentials
T1040Network Sniffing

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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