Auth bypass in Splunk
CVE-2021-26253
A potential vulnerability in Splunk Enterprise's implementation of DUO MFA allows for bypassing the MFA verification in Splunk Enterprise versions before 8.1.6. The potential vulnerability impacts Splunk Enterprise instances configured to use DUO MFA and does not impact or affect a DUO product or service.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.008 (55.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 55th percentile — 55.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: +0.000
Affected products
- Splunk
- Splunk Enterprise — versions Version(s) before 8.1.6
Weakness classification (CWE)
References
- www.splunk.com/en_us/product-security/announcements/svd-2022-0504.html (Vendor Advisory)
Frequently asked questions
- What is CVE-2021-26253?
- CVE-2021-26253 is a high-severity vulnerability in Splunk, classified under Improper Authentication. CVSS score: 8.1/10. Published 2022-05-06.
- How severe is CVE-2021-26253?
- High severity. CVSS v3 base score is 8.1 out of 10.