CVE•Published 2026-04-17•Modified 2026-04-24•1 article on news•7 live references•NVD data
CVE-2026-28224Firebirdsql · Firebird
Vulnerability data via NVD (ingested)
CVSS v3.1
8.2
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
EPSS percentile
26
Exploit Prediction Scoring System · top 74% of all CVEs
Weaknesses (CWE)
Description
Firebird is an open-source relational database management system. In versions prior to 5.0.4, 4.0.7 and 3.0.14, when the server receives an op_crypt_key_callback packet without prior authentication, the port_server_crypt_callback handler is not initialized, resulting in a null pointer dereference and server crash. An unauthenticated attacker who knows only the server's IP and port can exploit this to crash 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 2026-04-24
External references
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-2026-28224Hosts 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-2026-28224Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-28224Censys host search filtered to this CVE id.
grep.app
CVE-2026-28224Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-28224GitHub code search for direct mentions.
Google dork
"CVE-2026-28224" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.