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CVE PROGRAM SOURCE RECORD7.5 High

CVE-2026-35215

Firebird: DoS via malicious slice descriptor in slice packet

Description

Firebird is an open-source relational database management system. In versions prior to 5.0.4, 4.0.7 and 3.0.14, the sdl_desc() function does not validate the length of a decoded SDL descriptor from a slice packet. A zero-length descriptor is later used to calculate the number of slice items, causing a division by zero. An unauthenticated attacker can exploit this by sending a crafted slice packet to crash the server. This issue has been fixed in versions 5.0.4, 4.0.7 and 3.0.14.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

FirebirdSQL firebird

  • >= 3.0.0, < 3.0.14affected
  • >= 4.0.0, < 4.0.7affected
  • >= 5.0.0, < 5.0.4affected

References