Strix
26.1K

CVE-2021-27903

CRITICALCVSS 9.8/10EPSS 2.82%

Last modified

CVE-2021-27903 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. An issue was discovered in Craft CMS before 3.6.7. In some circumstances, a potential Remote Code Execution vulnerability existed on sites that did not restrict administrative changes (if an attacker were somehow able to hijack an administrator's session).. EPSS estimates a 2.82% chance of exploitation in the next 30 days.

Description

An issue was discovered in Craft CMS before 3.6.7. In some circumstances, a potential Remote Code Execution vulnerability existed on sites that did not restrict administrative changes (if an attacker were somehow able to hijack an administrator's session).

Metrics

CVSS 3.1
9.8/10

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

EPSS Probability
2.82%

84.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CraftcmsCraft Cms< 3.6.7

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-27903?
An issue was discovered in Craft CMS before 3.6.7. In some circumstances, a potential Remote Code Execution vulnerability existed on sites that did not restrict administrative changes (if an attacker were somehow able to hijack an administrator's session).
How severe is CVE-2021-27903?
CVE-2021-27903 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 2.82% probability of exploitation in the next 30 days.
How do I fix CVE-2021-27903?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-27903?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST