SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2015-5254

Apache ActiveMQ 5.x before 5.13.0 does not restrict the classes that can be serialized in the broker, which allows remote attackers to execute arbitrary code via a crafted serialized Java Message Service (JMS) ObjectMessage object.

CRITICAL 9.8EPSS 38.2%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 38.2%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.

Description

Apache ActiveMQ 5.x before 5.13.0 does not restrict the classes that can be serialized in the broker, which allows remote attackers to execute arbitrary code via a crafted serialized Java Message Service (JMS) ObjectMessage object.

CVSS 3.0
9.8 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
38.19% probability · 99th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-20
Affected
redhat/openshift · apache/activemq · fedoraproject/fedora
Source
secalert@redhat.com
EPSS trend
0%20%40%21 September 2026: 34.53%22 September 2026: 38.19%4 November 2026: 38.19%21 September 20264 November 2026

EPSS moved from 34.5% on 21 September 2026 to 38.2% on 4 November 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.