CVE-2026-28214: CWE-190: Integer Overflow or Wraparound in FirebirdSQL firebird
CVE-2026-28214 is an integer overflow vulnerability in FirebirdSQL's ClumpletReader::getClumpletSize() function affecting versions prior to 5. 0. 4, 4. 0. 7, and 3. 0. 14. The overflow occurs when parsing a Wide type clumplet, causing an infinite loop. An authenticated user with INSERT privileges can exploit this via a crafted Batch Parameter Block to cause a denial of service (DoS) against the database server. This issue has been fixed in the specified versions.
AI Analysis
Technical Summary
FirebirdSQL versions before 5.0.4, 4.0.7, and 3.0.14 contain an integer overflow in the ClumpletReader::getClumpletSize() function. When parsing a Wide type clumplet, the totalLength value can overflow, leading to an infinite loop condition. Exploitation requires authentication with INSERT privileges and involves sending a specially crafted Batch Parameter Block. The result is a denial of service against the FirebirdSQL server. The vulnerability is addressed by updates in versions 5.0.4, 4.0.7, and 3.0.14.
Potential Impact
An attacker with authenticated INSERT privileges can exploit this vulnerability to cause a denial of service by triggering an infinite loop in the server process. This disrupts availability of the FirebirdSQL database service. There is no indication of data disclosure or privilege escalation from the provided information.
Mitigation Recommendations
This vulnerability has been fixed in FirebirdSQL versions 5.0.4, 4.0.7, and 3.0.14. Users should upgrade to these or later versions to remediate the issue. No other mitigation or temporary workaround is indicated in the available data.
CVE-2026-28214: CWE-190: Integer Overflow or Wraparound in FirebirdSQL firebird
Description
CVE-2026-28214 is an integer overflow vulnerability in FirebirdSQL's ClumpletReader::getClumpletSize() function affecting versions prior to 5. 0. 4, 4. 0. 7, and 3. 0. 14. The overflow occurs when parsing a Wide type clumplet, causing an infinite loop. An authenticated user with INSERT privileges can exploit this via a crafted Batch Parameter Block to cause a denial of service (DoS) against the database server. This issue has been fixed in the specified versions.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
FirebirdSQL versions before 5.0.4, 4.0.7, and 3.0.14 contain an integer overflow in the ClumpletReader::getClumpletSize() function. When parsing a Wide type clumplet, the totalLength value can overflow, leading to an infinite loop condition. Exploitation requires authentication with INSERT privileges and involves sending a specially crafted Batch Parameter Block. The result is a denial of service against the FirebirdSQL server. The vulnerability is addressed by updates in versions 5.0.4, 4.0.7, and 3.0.14.
Potential Impact
An attacker with authenticated INSERT privileges can exploit this vulnerability to cause a denial of service by triggering an infinite loop in the server process. This disrupts availability of the FirebirdSQL database service. There is no indication of data disclosure or privilege escalation from the provided information.
Mitigation Recommendations
This vulnerability has been fixed in FirebirdSQL versions 5.0.4, 4.0.7, and 3.0.14. Users should upgrade to these or later versions to remediate the issue. No other mitigation or temporary workaround is indicated in the available data.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-02-25T15:28:40.649Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69e28194bdfbbecc597b95d0
Added to database: 4/17/2026, 6:53:08 PM
Last enriched: 4/17/2026, 7:08:28 PM
Last updated: 4/17/2026, 8:17:28 PM
Views: 5
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