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CVE-2025-55123VulnerabilityPublished

CVE-2025-55123: Revive Adserver · Cross-site Scripting

Affects Revive AdserverSource CVE Database V5

0

Not known to be exploited · CVSS 3.5 Low.

Data as of 25 Oct 2026, 19:02 UTC

CVSS 3.0 base score
3.5Low
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.4% chance of exploitation in 30 days – higher than 41% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 20 Nov 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 2026-10-25.

What to do

Affected software

ProductAffectedFixed in
Revive Revive AdserverAffected
  • =6
  • =5
Fixed in–

AI-suggested

1. Monitor for and apply official patches or updates from Revive as soon as they become available to address this vulnerability. 2. Restrict manager account privileges to only trusted personnel and enforce strong authentication mechanisms, including multi-factor authentication (MFA), to reduce the risk of credential compromise. 3. Implement Content Security Policy (CSP) headers to limit the execution of unauthorized scripts within the advertising platform's web interface. 4. Conduct regular security training for manager and advertiser users to recognize phishing attempts and suspicious interactions that could trigger XSS exploitation. 5. Review and sanitize all user inputs rigorously, especially those that managers can control or inject into advertiser-facing components. 6. Monitor logs and user activity for unusual behavior indicative of attempted exploitation or account misuse. 7. Consider isolating the adserver environment from critical internal networks to limit lateral movement if compromise occurs.

Description

Improper neutralization of input in Revive Adserver 5.5.2 and 6.0.1 and earlier versions causes manager accounts to be able to craft XSS attacks to their own advertiser users.

References

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