CVE-2021-21345 is a critical deserialization vulnerability in XStream, a Java XML serialization library, affecting versions prior to 1.4.16. This flaw allows a remote attacker with sufficient privileges to execute arbitrary commands on the host by manipulating the input stream, impacting products from vendors like Apache, Oracle, and Debian. With a CVSS score of 9.9, it represents a high-impact, low-complexity attack vector, leading to complete compromise of confidentiality, integrity, and availability. While not listed in CISA's KEV catalog, public Nuclei templates exist for this RCE, though there is no evidence of active exploitation, Metasploit modules, or significant community discussion.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
Range not provided by sourceCPE matchmatch criteria | cpe:2.3:a:netapp:oncommand_insight:-:*:*:*:*:*:*:* | ||
< 5.15.14CPE matchmatch criteria | cpe:2.3:a:apache:activemq:*:*:*:*:*:*:*:* | ||
5.16.0CPE matchmatch criteria | cpe:2.3:a:apache:activemq:5.16.0:*:*:*:*:*:*:* | ||
5.16.1CPE matchmatch criteria | cpe:2.3:a:apache:activemq:5.16.1:*:*:*:*:*:*:* | ||
< 5.5CPE matchmatch criteria | cpe:2.3:a:apache:jmeter:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:N/I:H/A:N
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 1.0 Bluesky, 0.5 Mastodon, and 1.6 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.