How severe is CVE-2021-29763?

CVE-2021-29763 has a CVSS 3.x base score of 5.1, rated medium severity. It is exploitable over local access with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2021-29763 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-29763?

CVE-2021-29763 primarily affects Ibm Db2. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-29763?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-29763 published?

CVE-2021-29763 was published on 2021-09-16 and last updated on 2026-06-17.

CVE-2021-29763

CVE-2021-29763 is a medium-severity vulnerability in Ibm Db2 with a CVSS 3.x base score of 5.1. 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-770.

Key facts

Severity: Medium (CVSS 3.x base score 5.1)
CVSS v2: 1.9
EPSS exploit prediction: 0% (16th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-770
Affected product: Ibm Db2
Published: 2021-09-16
Last modified: 2026-06-17

Description

IBM Db2 for Linux, UNIX and Windows (includes Db2 Connect Server) 11.1 and 11.5 under very specific conditions, could allow a local user to keep running a procedure that could cause the system to run out of memory.and cause a denial of service. IBM X-Force ID: 202267.

Frequently asked questions

What is CVE-2021-29763?: IBM Db2 for Linux, UNIX and Windows (includes Db2 Connect Server) 11.1 and 11.5 under very specific conditions, could allow a local user to keep running a procedure that could cause the system to run out of memory.and cause a denial of service. IBM X-Force ID: 202267.
How severe is CVE-2021-29763?: CVE-2021-29763 has a CVSS 3.x base score of 5.1, rated medium severity. It is exploitable over local access with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2021-29763 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-29763?: CVE-2021-29763 primarily affects Ibm Db2. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-29763?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-29763 published?: CVE-2021-29763 was published on 2021-09-16 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:ibm:db2:11.1:*:*:*:*:-:*:*
cpe:2.3:a:ibm:db2:11.5:*:*:*:*:-:*:*

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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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