CVE-2020-4253

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

0.90% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 57.2% of scored records. A rank, not a probability.

NVD base score

8.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/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.

Published

2020-03-24 15:20Z6 YR AGO

Last updated

2024-09-16 17:17Z1 YR AGO

Reserved

2019-12-30

Assigning CNA

ibm

Record state

PUBLISHED

Severity

Medium (CVSS 6.3)

CNA CVSS vector

CVSS:3.0/PR:L/AC:L/A:L/AV:N/S:U/UI:N/C:L/I:L/RL:O/RC:C/E:U

Weaknesses

• CWE-613Insufficient Session ExpirationBase

Data version

5.1

Document digest

55a88b7b28423a548c6dd26cb1d28b9b60c25222e78c00bb83e850e2dac572a7

• www.ibm.comhttps://www.ibm.com/support/pages/node/6116020x_refsource_CONFIRM
• exchange.xforce.ibmcloud.comibm-cn-cve20204253-session-fixation (175559)https://exchange.xforce.ibmcloud.com/vulnerabilities/175559vdb-entryx_refsource_XF