CVE-2021-42237 is a critical insecure deserialization vulnerability affecting Sitecore XP versions 7.5 Initial Release through 8.2 Update-7, allowing unauthenticated remote command execution. With a CVSS score of 9.8 (Critical), this flaw requires no authentication or special configuration, making it easily exploitable over the network. It has an exceptionally high EPSS score and FAUCET Risk Score of 100, indicating a severe and highly probable threat. This vulnerability is actively exploited, including in known ransomware campaigns, with public Metasploit modules and Nuclei templates available. It has garnered significant community discussion and media coverage, highlighting its widespread impact and the urgency for remediation.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
7.5CPE matchmatch criteria | cpe:2.3:a:sitecore:experience_platform:7.5:-:*:*:*:*:*:* | ||
7.5CPE matchmatch criteria | cpe:2.3:a:sitecore:experience_platform:7.5:update1:*:*:*:*:*:* | ||
7.5CPE matchmatch criteria | cpe:2.3:a:sitecore:experience_platform:7.5:update2:*:*:*:*:*:* | ||
8.0CPE matchmatch criteria | cpe:2.3:a:sitecore:experience_platform:8.0:-:*:*:*:*:*:* | ||
8.0CPE matchmatch criteria | cpe:2.3:a:sitecore:experience_platform:8.0:sp1:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.