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VulnerabilityPublished Updated

CVE-2025-55619: Reolink · Use of Hard-coded Cryptographic Key

Source CVE Database V5

0

Not known to be exploited · CVSS 9.8 Critical.

Data as of 26 Oct 2026, 17:16 UTC

CVSS 3.1 base score
9.8Critical
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.4% chance of exploitation in 30 days – higher than 36% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 22 Aug 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

AI-suggested

Immediate mitigation steps include: 1) Restrict network access to Reolink devices and associated management applications by implementing network segmentation and firewall rules to limit exposure to trusted networks only. 2) Monitor network traffic for unusual access patterns or unauthorized token usage that could indicate exploitation attempts. 3) Enforce strong authentication and session management policies on backend services to detect and invalidate suspicious sessions promptly. 4) Engage with Reolink to obtain official patches or firmware updates addressing this vulnerability as soon as they become available. 5) Where possible, replace or upgrade vulnerable devices with versions confirmed to be free of hardcoded cryptographic keys. 6) Educate security teams and users about the risks of hardcoded keys and the importance of secure key management. 7) Consider deploying endpoint detection and response (EDR) solutions capable of detecting reverse engineering or tampering attempts on client applications. 8) Conduct regular security assessments and penetration tests focusing on IoT device security to identify similar weaknesses proactively.

Description

Reolink v4.54.0.4.20250526 was discovered to contain a hardcoded encryption key and initialization vector. An attacker can leverage this vulnerability to decrypt access tokens and web session tokens stored inside the app via reverse engineering.

References

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