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TI-2026-22547 Aliases CVE-2026-28212

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

Priority HIGH 72CWE-476Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-476.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00503 43rd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed firebird (FirebirdSQL): 3.0.14, 4.0.7, 5.0.4

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
FirebirdSQLfirebirdbefore 3.0.14; 4.0.0 to before 4.0.7; 5.0.0 to before 5.0.43.0.14, 4.0.7, 5.0.4Patch availableCNA
  • firebird VendorFirebirdSQL Affected before 3.0.14; 4.0.0 to before 4.0.7; 5.0.0 to before 5.0.4 Fixed in 3.0.14, 4.0.7, 5.0.4 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:firebirdsql:firebird:*:*:*:*:*:*:*:*before 3.0.14; 4.0.0 to before 4.0.7; 5.0.0 to before 5.0.4VulnerableFirebirdSQL
  • cpe:2.3:a:firebirdsql:firebird:*:*:*:*:*:*:*:* Versions before 3.0.14; 4.0.0 to before 4.0.7; 5.0.0 to before 5.0.4 Vulnerable ·FirebirdSQL

Remediation

  • Fix · CNA firebird (FirebirdSQL) Fixed in 3.0.14, 4.0.7, 5.0.4

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-28212
  2. 2026-10-25 EPSS moved to the below the 50th percentile

References

Exploit 1

Other 3

  • TI-2026-22559 Firebird Null Pointer Dereference via CryptCallback causes DOS CVSS 3.1HIGH 8.2
  • TI-2026-22234 Firebird has Pre-Auth DOS when Processing Out of Order CNCT_specific_data Segments CVSS 3.1HIGH 8.2
  • TI-2026-27368 Firebird: DoS via malicious slice descriptor in slice packet CVSS 3.1HIGH 7.5
  • TI-2026-26527 Firebird: DoS via `op_response` packet from client CVSS 3.1HIGH 7.5
  • TI-2026-25747 Firebird has a buffer overflow when parsing corrupted slice packets CVSS 3.1HIGH 7.5
  • TI-2008-00362 Integer overflow in Firebird SQL 1.0.3 and earlier, 1.5.x before 1.5.6, 2.0.x before… CVSS 2.0HIGH 7.8
See all 45 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences