CVEvulnerability

CVE-2026-33337

7.5 HIGH Published 2026-04-17 Modified 2026-10-26 Official page ↗
Status
Analyzed
Published
2026-04-17
Last modified
2026-10-26
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-120, CWE-502

Description

Firebird is an open-source relational database management system. In versions prior to 5.0.4, 4.0.7 and 3.0.14, when deserializing a slice packet, the xdr_datum() function does not validate that a cstring length conforms to the slice descriptor bounds, allowing a cstring longer than the allocated buffer to overflow it. An unauthenticated attacker can exploit this by sending a crafted packet to the server, potentially causing a crash or other security impact. This issue has been fixed in versions 5.0.4, 4.0.7 and 3.0.14.

Affected configurations

• firebirdsql firebird (>= 3.0.0 < 3.0.14) • firebirdsql firebird (>= 4.0.0 < 4.0.7) • firebirdsql firebird (>= 5.0.0 < 5.0.4)

Related

Weakness · CWE (2)

  • CWE-120 Buffer Copy without Checking Size of Input weakness
  • CWE-502 Deserialization of Untrusted Data weakness

References