How severe is CVE-2023-30431?

CVE-2023-30431 has a CVSS 3.x base score of 8.4, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-30431 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-30431?

CVE-2023-30431 primarily affects Ibm Db2. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-30431?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2023-30431 published?

CVE-2023-30431 was published on 2023-07-10 and last updated on 2026-06-17.

CVE-2023-30431

CVE-2023-30431 is a high-severity vulnerability in Ibm Db2 with a CVSS 3.x base score of 8.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.

Key facts

Severity: High (CVSS 3.x base score 8.4)
EPSS exploit prediction: 0% (23rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Ibm Db2
Published: 2023-07-10
Last modified: 2026-06-17

Description

IBM Db2 for Linux, UNIX and Windows (includes Db2 Connect Server) 10.5, 11.1, and 11.5 db2set is vulnerable to a buffer overflow, caused by improper bounds checking. An attacker could overflow the buffer and execute arbitrary code. IBM X-Force ID: 252184.

Frequently asked questions

What is CVE-2023-30431?: IBM Db2 for Linux, UNIX and Windows (includes Db2 Connect Server) 10.5, 11.1, and 11.5 db2set is vulnerable to a buffer overflow, caused by improper bounds checking. An attacker could overflow the buffer and execute arbitrary code. IBM X-Force ID: 252184.
How severe is CVE-2023-30431?: CVE-2023-30431 has a CVSS 3.x base score of 8.4, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-30431 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-30431?: CVE-2023-30431 primarily affects Ibm Db2. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-30431?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-30431 published?: CVE-2023-30431 was published on 2023-07-10 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:a:ibm:db2:10.5.0.11:*:*:*:*:*:*:*
cpe:2.3:a:ibm:db2:11.1.4.7:*:*:*:*:*:*:*
cpe:2.3:a:ibm:db2:11.5:*:*:*:*:-:*:*

More vulnerabilities in Ibm Db2

CVE-2012-1797 — Critical (CVSS 10.0): IBM DB2 9.5 uses world-writable permissions for nodes.reg, which has unspecified impact and attack vectors.
CVE-2010-3731 — Critical (CVSS 10.0): Stack-based buffer overflow in the validateUser implementation in the com.ibm.db2.das.core.DasSysCmd function in…
CVE-2010-3193 — Critical (CVSS 10.0): Unspecified vulnerability in the DB2STST program in IBM DB2 9.1 before FP9, 9.5 before FP6, and 9.7 before FP2 has…
CVE-2009-4335 — Critical (CVSS 10.0): Multiple unspecified vulnerabilities in bundled stored procedures in the Spatial Extender component in IBM DB2 9.5…
CVE-2009-3473 — Critical (CVSS 10.0): IBM DB2 9.1 before FP8 does not require the SETSESSIONUSER privilege for the SET SESSION AUTHORIZATION statement, which…
CVE-2008-6821 — Critical (CVSS 10.0): Buffer overflow in the DAS server in IBM DB2 8 before FP17, 9.1 before FP5, and 9.5 before FP2 might allow attackers to…

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