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CVE-2025-55127

MEDIUM
5.4
CVSS Score
Published: November 20, 2025 at 07:07 PM UTC
Updated: June 17, 2026 at 09:41 AM UTC
2 products affected across 2 vendorsRevive AdserverRevive Adserver

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Severity
MEDIUM5.4
Exploit prediction
EPSS 0.2%
SSVC
PoC

Description

HackerOne community member Dao Hoang Anh (yoyomiski) has reported an improper neutralization of whitespace in the username when adding new users. A username with leading or trailing whitespace could be virtually indistinguishable from its legitimate counterpart when the username is displayed in the UI, potentially leading to confusion.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Revive Adserver· Aquaplatform
95%
6.0.0 ≤ v < 6.0.3
Revive Adserver· Revive Adserver
60%
6 ≤ v ≤ 6.0.26
Vendor states this is fixed in 6.0.3 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

ExploitIssue Tracking
Source: [email protected]
https://hackerone.com/reports/3413764

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.4MEDIUMCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-156

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