CVE•Published 2026-04-17•Modified 2026-04-27•0 articles on news•5 live references•NVD data

CVE-2026-34232Firebirdsql · Firebird

Vulnerability data via NVD (ingested)

CVSS v3.1

7.5

HIGH

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

EPSS percentile

Exploit Prediction Scoring System · top 83% of all CVEs

Weaknesses (CWE)

CWE-228Improper Handling of Syntactically Invalid Structure

Description

Firebird is an open-source relational database management system. In versions prior to 5.0.4, 4.0.7 and 3.0.14, the xdr_status_vector() function does not handle the isc_arg_cstring type when decoding an op_response packet, causing a server crash when one is encountered in the status vector. An unauthenticated attacker can exploit this by sending a crafted op_response packet to the server. This issue has been fixed in versions 5.0.4, 4.0.7 and 3.0.14.

Timeline

Published 2026-04-17

Modified 2026-04-27

External references

NVD MITRE Exploit-DB Sploitus VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2026-34232

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Firebirdsql Firebird"

All exposed Firebirdsql Firebird instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Firebird"

HTTP body or banner mentions "Firebird" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2026-34232