PT-2026-33480 · Firebird+1 · Firebird+1

CVE-2026-28224 · Published 2026-04-17 · Updated 2026-05-15

Positive Technologies (AI Summary)

CVSS v2.0

8.5

High

Base vector

AV:N/AC:L/Au:N/C:N/I:P/A:C

Name of the Vulnerable Software and Affected Versions Firebird versions prior to 5.0.4 Firebird versions prior to 4.0.7 Firebird versions prior to 3.0.14

Description An unauthenticated attacker can cause a server crash by sending an 'op crypt key callback' packet before authentication. This occurs because the port server crypt callback() handler is not initialized, leading to a null pointer dereference, which is when a program attempts to read or write to a memory location using a pointer that is null.

Recommendations Update to version 5.0.4 Update to version 4.0.7 Update to version 3.0.14

Exploit

Fix

DoS

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

BDU:2026-05711

CVE-2026-28224

GHSA-XRCW-WPJX-PR95

OESA-2026-2013

OESA-2026-2014

OESA-2026-2015

OESA-2026-2016

OESA-2026-2017

SUSE-SU-2026:1868-1

Affected Products

Firebird

Red Os

References · 36

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/28xxx/CVE-2026-28224.json · Exploit
• 🔥 https://github.com/FirebirdSQL/firebird/security/advisories/GHSA-xrcw-wpjx-pr95 · Exploit
• https://osv.dev/vulnerability/OESA-2026-2014 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-28224 · Vendor Advisory
• https://osv.dev/vulnerability/OESA-2026-2015 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-40342 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-65104 · Security Note
• https://cve.org/CVERecord?id=CVE-2026-28224 · Security Note
• https://osv.dev/vulnerability/OESA-2026-2016 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-28224 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-28214 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2026-28224 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2026-28224 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-05711 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-28224 · Security Note