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CVE-2026-33337

Firebird is an open-source relational database management system. In versions prior to 5.0.4, 4.0.7 and 3.0.14, when deserializing a slice packet, the xdr_datum() function does not validate that a cstring length conforms to the slice descriptor bounds, allowing a cstring longer than the allocated buffer to overflow it. An unauthenticated attacker can exploit this by sending a crafted packet to the server, potentially causing a crash or other security impact. This issue has been fixed in versions
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:1d8be172bfa98682e1518a60be3317fa199d0983602d7d8f2aec8b3cc2bd9e6d
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-120","description":"CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:564090120e818b2a78091a107195618e4b2a3785261eabb093a83dc2f2842552 · sha256:be626cdbf4128855… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-502","description":"CWE-502: Deserialization of Untrusted Data","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:564090120e818b2a78091a107195618e4b2a3785261eabb093a83dc2f2842552 · sha256:be626cdbf4128855… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion
{"product":"firebird","vendor":"FirebirdSQL","versions":[{"status":"affected","version":">= 3.0.0, < 3.0.14"},{"status":"affected","version":">= 4.0.0, < 4.0.7"},{"status":"affected","version":">= 5.0.0, < 5.0.4"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:564090120e818b2a78091a107195618e4b2a3785261eabb093a83dc2f2842552 · sha256:be626cdbf4128855… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:564090120e818b2a78091a107195618e4b2a3785261eabb093a83dc2f2842552 · sha256:be626cdbf4128855… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-120","description":"CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:564090120e818b2a78091a107195618e4b2a3785261eabb093a83dc2f2842552 · sha256:be626cdbf4128855… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-502","description":"CWE-502: Deserialization of Untrusted Data","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:564090120e818b2a78091a107195618e4b2a3785261eabb093a83dc2f2842552 · sha256:be626cdbf4128855… · /containers/cna/problemTypes/1/descriptions/0

Source references

4 source assertions
{"name":"https://github.com/FirebirdSQL/firebird/releases/tag/v3.0.14","tags":["x_refsource_MISC"],"url":"https://github.com/FirebirdSQL/firebird/releases/tag/v3.0.14"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:564090120e818b2a78091a107195618e4b2a3785261eabb093a83dc2f2842552 · sha256:be626cdbf4128855… · /containers/cna/references/1
{"name":"https://github.com/FirebirdSQL/firebird/releases/tag/v4.0.7","tags":["x_refsource_MISC"],"url":"https://github.com/FirebirdSQL/firebird/releases/tag/v4.0.7"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:564090120e818b2a78091a107195618e4b2a3785261eabb093a83dc2f2842552 · sha256:be626cdbf4128855… · /containers/cna/references/2
{"name":"https://github.com/FirebirdSQL/firebird/releases/tag/v5.0.4","tags":["x_refsource_MISC"],"url":"https://github.com/FirebirdSQL/firebird/releases/tag/v5.0.4"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:564090120e818b2a78091a107195618e4b2a3785261eabb093a83dc2f2842552 · sha256:be626cdbf4128855… · /containers/cna/references/3
{"name":"https://github.com/FirebirdSQL/firebird/security/advisories/GHSA-89mq-229g-x47p","tags":["x_refsource_CONFIRM"],"url":"https://github.com/FirebirdSQL/firebird/security/advisories/GHSA-89mq-229g-x47p"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:564090120e818b2a78091a107195618e4b2a3785261eabb093a83dc2f2842552 · sha256:be626cdbf4128855… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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