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VulnerabilityPublished Updated

CVE-2025-24975: Firebird3.0 · Firebird is a relational database

Affects firebird3.0Source GCVE Database

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Authoritative record:CVE-2025-24975· High 7.1

Not known to be exploited · CVSS 7.1 High · fixed in 4.0.6.3183 : patch firebird3.0 soon.

Data as of 5 Nov 2026, 00:01 UTC

CVSS 3.1 base score
7.1High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.5% chance of exploitation in 30 days – higher than 46% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 4.0.6.3183
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 15 Aug 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 4 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
Ubuntu 26.10firebird3.0pkg:deb/ubuntu/firebird3.0?arch=source&distro=stonkingOther threatsAffected
  • =3.0.13.ds7-2build1
  • =3.0.14.ds7-1
Fixed in–
Ubuntu 26.04 LTSfirebird3.0pkg:deb/ubuntu/firebird3.0?arch=source&distro=resoluteOther threatsAffected
  • =3.0.12.ds7-12
  • =3.0.13.ds7-2
  • =3.0.13.ds7-2build1
Fixed in–
Ubuntu 25.10firebird3.0pkg:deb/ubuntu/firebird3.0?arch=source&distro=questingOther threatsAffected
  • =3.0.12.ds7-12
Fixed in–
Ubuntu 25.10firebird4.0pkg:deb/ubuntu/firebird4.0?arch=source&distro=questingOther threatsAffected
  • =4.0.5.3140.ds6-16
  • =4.0.5.3140.ds6-17
  • =4.0.6.3221.ds6-2
Fixed in–
Ubuntu 20.04 LTSfirebird3.0pkg:deb/ubuntu/firebird3.0?arch=source&distro=focalOther threatsAffected
  • 3.0.5.33100.ds4-3 – 3.0.5.33220.ds4-1build2
6 affected builds
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

This vulnerability has been patched in Firebird snapshot versions 4.0.6.3183, 5.0.2.1610, and 6.0.0.609, as well as in point releases 4.0.6 and 5.0.2. Users should upgrade to these fixed versions to remediate the issue. As a workaround, setting ExtConnPoolSize to 0 in the firebird.conf configuration file disables the external connection pool and mitigates the vulnerability.

Description

Firebird relational database versions prior to snapshot versions 4.0.6.3183, 5.0.2.1610, and 6.0.0.609 are vulnerable to a server process segfault when ExtConnPoolSize is not set to 0. This occurs due to improper verification of connections in the external connection pool related to the CryptCallback interface. The vulnerability can affect both encrypted and unencrypted databases, potentially allowing access to encrypted databases without proper keys and causing crashes when execute statements are chained. The issue has been patched in the specified snapshot and point releases. A workaround is to set ExtConnPoolSize to 0 in the configuration file.

References

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