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CVE-2020-4135
IBM DB2 for Linux, UNIX and Windows (includes DB2 Connect Server) 9.7, 10.1, 10.5, 11.1, and 11.5 could allow an unauthenticated user to…
High7.5EPSS 2.9%
- Published
- Updated
- Reserved
- Assigned by
- ibm
Description
IBM DB2 for Linux, UNIX and Windows (includes DB2 Connect Server) 9.7, 10.1, 10.5, 11.1, and 11.5 could allow an unauthenticated user to send specially crafted packets to cause a denial of service from excessive memory usage.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| ibmCNA (assigner) | 3.0 | High7.5 | CVSS:3.0/A:H/PR:N/AC:L/C:N/S:U/UI:N/AV:N/I:N/RC:C/RL:O/E:U |
| NVDNVD · Modified | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 2.9% · top 13% of all CVEs (7 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Weakness
- Denial of Service
Affected products
IBM · DB2 for Linux- UNIX and Windows
- affected 9.7
- affected 10.1
- affected 10.5
- affected 11.1
- affected 11.5
References (3)
- https://www.ibm.com/support/pages/node/2876307 (opens in a new tab)x_refsource_CONFIRMx_transferred
- ibm-db2-cve20204135-dos (173806) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- https://security.netapp.com/advisory/ntap-20210108-0001/ (opens in a new tab)x_refsource_CONFIRMx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2020-4135)Record last updated .