KEV · Actively exploited
CVE-2021-40438
CVE-2021-40438 is actively exploited (CISA KEV catalog) : critical severity (CVSS 9.0), 0 tracked apps concerned, none still exposed on their current version.
- Severity (CVSS)
- 9.0
- Exploitation
- Confirmed
- Tracked apps
- 0
- Still exposed
- 0
NVD scale
CISA KEV · EPSS predicts 100.0 %
A crafted request uri-path can cause mod_proxy to forward the request to an origin server choosen by the remote user. This issue affects Apache HTTP Server 2.4.48 and earlier.
Attack vector : Network
No privileges required
No user interaction
Show raw CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
EPSS
100.00%
predictive model; CISA confirms active exploitation
percentile 100.0%
CISA Known Exploited Vulnerability
- Added to KEV
- 2021-12-01
- Remediation deadline
- 2021-12-15
- Required action
- Apply updates per vendor instructions.
- Ransomware
- Yes, known ransomware campaign