CVE-2020-4355

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-07-01 · updated 2026-06-17

Description

IBM DB2 for Linux, UNIX and Windows (includes DB2 Connect Server) 9.7, 10.1, 10.5, 11.1, and 11.5 is vulnerable to a denial of service, caused by improper handling of Secure Sockets Layer (SSL) renegotiation requests. By sending specially-crafted requests, a remote attacker could exploit this vulnerability to increase the resource usage on the system. IBM X-Force ID: 178507.

Affected products

IBM Db2 for Linux, UNIX and Windows: 9.7.0.0, 10.1.0.0, 10.5.0.0, 11.1.0.0, 11.5.0.0

References

https://exchange.xforce.ibmcloud.com/vulnerabilities/178507
https://www.ibm.com/support/pages/node/6242350
https://exchange.xforce.ibmcloud.com/vulnerabilities/178507
https://www.ibm.com/support/pages/node/6242350

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