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CVE-2025-54989

Firebird XDR Message Parsing NULL Pointer Dereference Denial-of-Service Vulnerability

5.3 MediumFix available

Firebird is a relational database. Prior to versions 3.0.13, 4.0.6, and 5.0.3, there is an XDR message parsing NULL pointer dereference denial-of-service vulnerability in Firebird. This specific flaw exists within the parsing of xdr message from client. It leads to NULL pointer dereference and DoS. This issue has been patched in versions 3.0.13, 4.0.6, and 5.0.3.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
None
Availability
Low

Exploit likelihood

0.68%Up 0.6 points since Aug 16, 2025
90%50%10%1%

What each source reports

CVE List Score used 5.3

Firebird XDR Message Parsing NULL Pointer Dereference Denial-of-Service Vulnerability

Firebird is a relational database. Prior to versions 3.0.13, 4.0.6, and 5.0.3, there is an XDR message parsing NULL pointer dereference denial-of-service vulnerability in Firebird. This specific flaw exists within the parsing of xdr message from client. It leads to NULL pointer dereference and DoS. This issue has been patched in versions 3.0.13, 4.0.6, and 5.0.3.

Record
CVE-2025-54989
CVSS 3.1
5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Weakness
CWE-476
Updated
2026-11-02
EUVDEUVD-2025-25032 5.3

Firebird is a relational database. Prior to versions 3.0.13, 4.0.6, and 5.0.3, there is an XDR message parsing NULL pointer dereference denial-of-service vulnerability in Firebird. This specific flaw exists within the parsing of xdr message from client. It leads to NULL pointer dereference and DoS. This issue has been patched in versions 3.0.13, 4.0.6, and 5.0.3.

Record
EUVD-2025-25032
CVSS 3.1
5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Updated
2026-11-02
NVD 5.3

Firebird is a relational database. Prior to versions 3.0.13, 4.0.6, and 5.0.3, there is an XDR message parsing NULL pointer dereference denial-of-service vulnerability in Firebird. This specific flaw exists within the parsing of xdr message from client. It leads to NULL pointer dereference and DoS. This issue has been patched in versions 3.0.13, 4.0.6, and 5.0.3.

Record
CVE-2025-54989
CVSS 3.1
5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-476
Updated
2026-11-02
OSV 5.3

Firebird XDR Message Parsing NULL Pointer Dereference Denial-of-Service Vulnerability

Firebird is a relational database. Prior to versions 3.0.13, 4.0.6, and 5.0.3, there is an XDR message parsing NULL pointer dereference denial-of-service vulnerability in Firebird. This specific flaw exists within the parsing of xdr message from client. It leads to NULL pointer dereference and DoS. This issue has been patched in versions 3.0.13, 4.0.6, and 5.0.3.

Record
CVE-2025-54989
CVSS 3.1
5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Weakness
CWE-476
Updated
2026-11-02
OSVDEBIAN-CVE-2025-54989 7.5

Firebird is a relational database. Prior to versions 3.0.13, 4.0.6, and 5.0.3, there is an XDR message parsing NULL pointer dereference denial-of-service vulnerability in Firebird. This specific flaw exists within the parsing of xdr message from client. It leads to NULL pointer dereference and DoS. This issue has been patched in versions 3.0.13, 4.0.6, and 5.0.3.

Record
DEBIAN-CVE-2025-54989
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2025-54989 5.3

Firebird is a relational database. Prior to versions 3.0.13, 4.0.6, and 5.0.3, there is an XDR message parsing NULL pointer dereference denial-of-service vulnerability in Firebird. This specific flaw exists within the parsing of xdr message from client. It leads to NULL pointer dereference and DoS. This issue has been patched in versions 3.0.13, 4.0.6, and 5.0.3.

Record
UBUNTU-CVE-2025-54989
CVSS 3.1
5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVSUSE-SU-2025:02991-1 No score

Security update for firebird

This update for firebird fixes the following issues:

  • CVE-2025-54989: Fixed NULL pointer dereference in XDR message parsing leading to denial-of-service (ZDI-CAN-26486, bsc#1248143)
Record
SUSE-SU-2025:02991-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
firebird3.0
Debian:12
 before 3.0.11.33637.ds4-2+deb12u1, plus listed versions
3.0.11.33637.ds4-2
3.0.11.33637.ds4-2+deb12u1
firebird3.0
Debian:13
 before 3.0.12.ds7-13+deb13u1, plus listed versions
3.0.12.ds7-13
3.0.12.ds7-13+deb13u1
firebird3.0
Debian:14
 before 3.0.13.ds7-1, plus listed versions
3.0.12.ds7-133.0.12.ds7-13+m68k3.0.12.ds7-13+m68k.1
3.0.13.ds7-1
firebird4.0
Debian:13
 before 4.0.5.3140.ds6-17+deb13u1, plus listed versions
4.0.5.3140.ds6-17
4.0.5.3140.ds6-17+deb13u1
firebird4.0
Debian:14
 before 4.0.6.3221.ds6-1, plus listed versions
4.0.5.3140.ds6-174.0.5.3140.ds6-17+m68k
4.0.6.3221.ds6-1
firebird3.0
Debian:11
 before 3.0.7.33374.ds4-2+deb11u1, plus listed versions
3.0.7.33374.ds4-2
3.0.7.33374.ds4-2+deb11u1
firebird4.0
Debian:13
From an advisory covering 2 CVEs
 before 4.0.5.3140.ds6-17+deb13u1, plus listed versions
4.0.5.3140.ds6-17
4.0.5.3140.ds6-17+deb13u1
firebird
SUSE:Linux Enterprise Module for Package Hub 15 SP6
 before 3.0.4.33054-150200.3.3.1
3.0.4.33054-150200.3.3.1
firebird
SUSE:Linux Enterprise Module for Package Hub 15 SP7
 before 3.0.4.33054-150200.3.3.1
3.0.4.33054-150200.3.3.1
firebird
openSUSE:Leap 15.6
 before 3.0.4.33054-150200.3.3.1
3.0.4.33054-150200.3.3.1
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Affected packages
PackageAffectedFixed
firebird3.0
Ubuntu:18.04:LTS
 All versions, plus listed versions
3.0.2.32703.ds4-93.0.2.32703.ds4-11ubuntu13.0.2.32703.ds4-11ubuntu2
 None known
firebird3.0
Ubuntu:20.04:LTS
 All versions, plus listed versions
3.0.5.33100.ds4-33.0.5.33189.ds4-13.0.5.33209.ds4-13.0.5.33220.ds4-13.0.5.33220.ds4-1build13.0.5.33220.ds4-1build2
 None known
firebird3.0
Ubuntu:22.04:LTS
 All versions, plus listed versions
3.0.7.33374.ds4-23.0.8.33535.ds4-1ubuntu13.0.8.33535.ds4-1ubuntu2
 None known
firebird3.0
Ubuntu:24.04:LTS
 All versions, plus listed versions
3.0.11.33637.ds4-2ubuntu13.0.11.33637.ds4-2ubuntu23.0.11.33703.ds4-2ubuntu13.0.11.33703.ds4-2ubuntu2
 None known
firebird3.0
Ubuntu:25.10
 All versions, plus listed versions
3.0.12.ds7-12
 None known
firebird4.0
Ubuntu:25.10
 All versions, plus listed versions
4.0.5.3140.ds6-164.0.5.3140.ds6-174.0.6.3221.ds6-2
 None known
firebird3.0
Ubuntu:26.04:LTS
 All versions, plus listed versions
3.0.12.ds7-123.0.13.ds7-23.0.13.ds7-2build1
 None known

History

History
RecordedChangedSources
affected, facts
first indexedCVE List, EUVD, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2025-54989 is a medium vulnerability (CVSS 5.3) in Firebirdsql Firebird, published August 15, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.68%, the 52nd percentile. Fixed in firebird3.0 3.0.11.33637.ds4-2+deb12u1.

References

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