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CVE-2009-2620: firebirdsql firebird Improper Input Validation

CVSS: 5.0v2.0MediumAnalyzed
Published 29-07-2009Last modified 07-08-2024
Open JSON

Vulnerability summary

CVE-2009-2620 is a medium (CVSS 5.0) Improper Input Validation vulnerability in firebirdsql firebird. EPSS estimates a 8.63% chance of exploitation in the next 30 days, higher than 95% of scored vulnerabilities. 3 public exploits are recorded.

Overall risk
32/100
0100
Medium · default modelHow is this calculated?
CVSS score
5.0/10
010
Medium · v2.0 (NVD)
EPSS score
8.63%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits3reference, exploit-database

Timeline

  1. 29-07-2009
    PublishedVulnerability first disclosed.
  2. 07-08-2024
    Last modifiedVulnerability information updated.

Description

src/remote/server.cpp in fbserver.exe in Firebird SQL 1.5 before 1.5.6, 2.0 before 2.0.6, 2.1 before 2.1.3, and 2.5 before 2.5 Beta 2 allows remote attackers to cause a denial of service (daemon crash) via a malformed op_connect_request message that triggers an infinite loop or NULL pointer dereference.

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

8.63%

Chance of exploitation in the next 30 days

Percentile

95%

Versus all other CVEs

30-day change

0.00 pp

From 8.63% on 21-09-2026

21-09-202621-10-2026
EPSS score
8.63%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

3 found
  • referenceUnverified

    Exploit Reference (securityfocus.com)

    Maturity: unknown

  • referenceUnverified

    Exploit Reference (coresecurity.com)

    Maturity: unknown

  • exploit-databasedoswindowsVerified

    Firebird SQL - op_connect_request main listener shutdown

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Firebirdsql1 product
  • firebird≥ 1.5, < 1.5.6 | ≥ 2.0.0, < 2.0.6 | ≥ 2.1, < 2.1.3 | 2.5.0 | 2.5.0:alpha1 | 2.5.0:beta1

1 vendor · 1 product

References

7 links