HIGH🇵🇱 Wersja polska

CVE-2026-27890

CVSS 8.2v3.1pub. 2026-04-17upd. 2026-04-24

Firebird is an open-source relational database management system. In versions prior to 5.0.4, 4.0.7 and 3.0.14, when processing CNCT_specific_data segments during authentication, the server assumes segments arrive in strictly ascending order. If segments arrive out of order, the Array class's grow() method computes a negative size value, causing a SIGSEGV crash. An unauthenticated attacker who knows only the server's IP and port can exploit this to crash the server. This issue has been fixed in versions 5.0.4, 4.0.7 and 3.0.14.

CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
  • Firebirdsql Firebird

    APP
    Firebirdsql
    < 3.0.144.0.0 – 4.0.7 (bez)5.0.0 – 5.0.4 (bez)
🔵
CHECK WITH VENDOR
No clear patch data available. Check vendor references.
Tags
Auth Bypass
CWE
References

Related vulnerabilities

CVE-2026-40342CRITICAL9.9PL ✓ten sam produkt

RCE przez path traversal w ładowaniu wtyczek zewnętrznych Firebird

CVE-2026-28212HIGH7.5ten sam produkt

Firebird is an open-source relational database management system. In versions prior to 6.0.0, 5.0.4, 4.0.7 and...

CVE-2026-28224HIGH8.2ten sam produkt

Firebird is an open-source relational database management system. In versions prior to 5.0.4, 4.0.7 and 3.0.14...

CVE-2025-65104HIGH7.9ten sam produkt

Firebird is an open-source relational database management system. In versions FB3 of the client library placed...

CVE-2026-33337HIGH7.5ten sam produkt

Firebird is an open-source relational database management system. In versions prior to 5.0.4, 4.0.7 and 3.0.14...