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    CVE-2026-21640

    HackerOne community member Faraz Ahmed (PakCyberbot) has reported a format string injection in the Revive Adserver settings. When specific character combinations are used in a setting, the admin user console could be disabled due to a fatal PHP error.

    Published:Jan 20, 2026
    Last Modified:Apr 18, 2026
    EPS:Jan 20, 2026
    EPSS Score:0.00033
    CVSS Score:2.7

    Affected Products

    Vendor
    Aquaplatform
    Product
    Revive Adserver
    Vendor
    Revive
    Product
    Adserver

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-135 Format String Injection
    CAPEC-67 String Format Overflow in syslog()

    Related CVEs

    CVE-2026-21642 (CVSS 6.1) — HackerOne community member Patrick Lang (7yr) has reported a reflected XSS vulnerability in the `banner-acl.ph…
    CVE-2026-21664 (CVSS 6.1) — HackerOne community member Huynh Pham Thanh Luc (nigh7c0r3) has reported a reflected XSS vulnerability in the …
    CVE-2026-21663 (CVSS 6.1) — HackerOne community member Patrick Lang (7yr) has reported a reflected XSS vulnerability in the banner-acl.php…
    CVE-2026-21641 (CVSS 6.5) — HackerOne community member Jad Ghamloush (0xjad) has reported an authorization bypass vulnerability in the `tr…
    CVE-2025-55129 (CVSS 5.4) — HackerOne community member Kassem S.(kassem_s94) has reported that username handling in Revive Adserver was st…
    CVE-2025-55126 (CVSS 6.5) — HackerOne community member Dang Hung Vi (vidang04) has reported a stored XSS vulnerability involving the navig…
    CVE-2025-55127 (CVSS 5.4) — HackerOne community member Dao Hoang Anh (yoyomiski) has reported an improper neutralization of whitespace in …
    CVE-2025-55128 (CVSS 6.5) — HackerOne community member Dang Hung Vi (vidang04) has reported an uncontrolled resource consumption vulnerabi…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High