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CVE-2025-24975

28
FAUCET Score

CVE-2025-24975 is a high-severity vulnerability affecting Firebird relational databases prior to snapshot versions 4.0.6.3183, 5.0.2.1610, and 6.0.0.609. The vulnerability, a result of improper handling of connections in the ExtConnPool when ExtConnPoolSize is not zero, can lead to a server process segfault, potentially impacting both encrypted and unencrypted databases. With a CVSS score of 8.8 (High), this flaw allows an unauthenticated attacker to achieve high confidentiality, integrity, and availability impacts with low attack complexity. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
>= 4.0.0, < 4.0.6CPE matchmatch criteria
cpe:2.3:a:firebirdsql:firebird:*:*:*:*:*:*:*:*
>= 5.0.0, < 5.0.2CPE matchmatch criteria
cpe:2.3:a:firebirdsql:firebird:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.1HIGH

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
LOW
Exploitability Score
1.6
Impact Score
5.5
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.50%
Probability of exploitation in next 30 days
EPSS Percentile
40.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0050 is in the 29th percentile among its peer group of 17,823 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

vicarius.io / vsociety/posts/cve-2025-24975-detect-vulnerable-firebird
ExploitThird Party Advisory
vicarius.io / vsociety/posts/cve-2025-24975-mitigate-firebird-vulnerability
ExploitThird Party Advisory
github.com / FirebirdSQL/firebird/commit/658abd20449f72097fbbce57e8e6ae42ff837fb6
Patch
github.com / FirebirdSQL/firebird/issues/8429
Issue Tracking
github.com / FirebirdSQL/firebird/security/advisories/GHSA-fx9r-rj68-7p69
MitigationVendor Advisory