CVE-2025-27533 is a Memory Allocation with Excessive Size Value vulnerability in Apache ActiveMQ versions 6.0.0 before 6.1.6, 5.18.0 before 5.18.7, 5.17.0 before 5.17.7, and before 5.16.8, where improper validation of buffer size during OpenWire command unmarshalling can lead to excessive memory allocation. This vulnerability has a CVSS score of 7.5 (HIGH), indicating a network-based attack with low complexity that can result in a denial of service by depleting process memory, affecting services relying on the ActiveMQ broker. While not actively exploited in the wild, an ExploitDB entry (EDB-52288) exists for a Denial of Service, and there is minimal community discussion or media coverage surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 5.16.0, < 5.16.8CPE matchmatch criteria | cpe:2.3:a:apache:activemq:*:*:*:*:*:*:*:* | ||
>= 5.17.0, < 5.17.7CPE matchmatch criteria | cpe:2.3:a:apache:activemq:*:*:*:*:*:*:*:* | ||
>= 5.18.0, < 5.18.7CPE matchmatch criteria | cpe:2.3:a:apache:activemq:*:*:*:*:*:*:*:* | ||
>= 6.0.0, < 6.1.6CPE matchmatch criteria | cpe:2.3:a:apache:activemq:*:*:*:*:*:*:*:* |
CVSS version used by this source: 4.0
CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:A/V:D/RE:M/U:Red
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.