CVE-2026-28212CWE-476

Firebird has potential server crash via null pointer dereference when processing op_slice packet

High · published April 17, 2026

CVSS v3.1
7.5
EPSS
1%
Percentile
54.4
In the wild
Unconfirmed
What it is

Firebird is an open-source relational database management system. In versions prior to 6.0.0, 5.0.4, 4.0.7 and 3.0.14, when processing an op_slice network packet, the server passes an unprepared structure containing a null pointer to the SDL_info() function, resulting in a null pointer dereference and server crash. An unauthenticated attacker can trigger this by sending a crafted packet to the server port. This issue has been fixed in versions 6.0.0, 5.0.4, 4.0.7 and 3.0.14.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00750 · 54.4th percentile
Weakness
CWE-476 · NULL Pointer Dereference
Published
2026-04-17T18:05Z
EPSS history
Timeline
  • 17 APR 18:05Z
    Firebird has potential server crash via null pointer dereference when processing op_slice packet
    cvelistv5