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01 Record

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 send specially crafted packets to cause a denial of service

HighPUBLISHEDCNA: ibm
CNA base score7.5 CVSS v3.xCVSS:3.0/A:H/PR:N/AC:L/C:N/S:U/UI:N/AV:N/I:N/RC:C/RL:O/E:U
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02 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

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
2.92% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 86.8% of scored records. A rank, not a probability.
NVD base score
7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2020-02-19 15:15Z6 YR AGO
Last updated
2024-09-16 18:28Z2 YR AGO
Reserved
2019-12-30
Assigning CNA
ibm
Record state
PUBLISHED
Severity
High (CVSS 7.5)
CNA CVSS vector
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
Weaknesses
No CWE assigned
Data version
5.1
Document digest
ccbd2b6f2b831881ff22a5d8d97a7d6c7e9d4b2d39c80c3bcacf3678146f09e0

05 Affected products

VendorProductVersionsPlatforms
IBMDB2 for Linux- UNIX and Windows9.7, 10.1, 10.5, 11.1, 11.5—

06 References