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    CVE-2026-35215

    Firebird is an open-source relational database management system. In versions prior to 5.0.4, 4.0.7 and 3.0.14, the sdl_desc() function does not validate the length of a decoded SDL descriptor from a slice packet. A zero-length descriptor is later used to calculate the number of slice items, causing a division by zero. An unauthenticated attacker can exploit this by sending a crafted slice packet to crash the server. This issue has been fixed in versions 5.0.4, 4.0.7 and 3.0.14.

    Published:Apr 17, 2026
    Last Modified:Apr 27, 2026
    EPS:Apr 17, 2026
    EPSS Score:0.00056
    CVSS Score:7.5

    Affected Products

    Vendor
    Firebirdsql
    Product
    Firebird

    Exploits

    https://github.com/FirebirdSQL/firebird/security/advisories/GHSA-g99w-prq5-29c6

    Common Weakness Enumeration

    CWE-369 Divide By Zero

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

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    CVE-2026-33337 (CVSS 7.5) — Firebird is an open-source relational database management system. In versions prior to 5.0.4, 4.0.7 and 3.0.14…
    CVE-2026-28224 (CVSS 8.2) — Firebird is an open-source relational database management system. In versions prior to 5.0.4, 4.0.7 and 3.0.14…
    CVE-2026-28214 (CVSS 6) — Firebird is an open-source relational database management system. In versions prior to 5.0.4, 4.0.7 and 3.0.14…
    CVE-2026-27890 (CVSS 8.2) — Firebird is an open-source relational database management system. In versions prior to 5.0.4, 4.0.7 and 3.0.14…
    CVE-2026-28212 (CVSS 7.5) — Firebird is an open-source relational database management system. In versions prior to 6.0.0, 5.0.4, 4.0.7 and…
    CVE-2025-65104 (CVSS 7.9) — Firebird is an open-source relational database management system. In versions FB3 of the client library placed…
    CVE-2025-24975 (CVSS 7.1) — Firebird is a relational database. Prior to snapshot versions 4.0.6.3183, 5.0.2.1610, and 6.0.0.609, Firebird …
    CVE-2025-54989 (CVSS 5.3) — Firebird is a relational database. Prior to versions 3.0.13, 4.0.6, and 5.0.3, there is an XDR message parsing…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High