CVE-2026-34232
High
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.
SeverityHigh
CVSS7.5
Exploit probability—
ProductFirebird
PublishedApr 17, 2026
First seenApr 17, 2026
Weakness typeCWE-228CWE-228
How to fix
Update
- firebirdsql firebird3.0.14, 4.0.7, 5.0.4 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| firebirdsql firebird | 3.0.0 ≤ v < 3.0.14, 4.0.0 ≤ v < 4.0.7, 5.0.0 ≤ v < 5.0.4 | 3.0.14, 4.0.7, 5.0.4 |
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