Critical severity · published Oct 27, 2023
CVE-2023-46604
Apache ActiveMQ, Apache ActiveMQ Legacy OpenWire Module: Unbounded deserialization causes ActiveMQ to be vulnerable to a remote code execution (RCE) attack
RansomwareIn wildKEV
9.8
CVSS
99.9%
EPSS
Yes
On KEV
Description
The Java OpenWire protocol marshaller is vulnerable to Remote Code Execution. This vulnerability may allow a remote attacker with network access to either a Java-based OpenWire broker or client to run arbitrary shell commands by manipulating serialized class types in the OpenWire protocol to cause either the client or the broker (respectively) to instantiate any class on the classpath. Users are recommended to upgrade both brokers and clients to version 5.15.16, 5.16.7, 5.17.6, or 5.18.3 which fixes this issue.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)99.9% · higher than 100% of CVEs
Exploited in the wildYes
CISA KEVListed Nov 2, 2023
Federal remediation dueNov 23, 2023
Ransomware campaign useKnown
Affected products
Which versions
AC
ActiveMQ · Apache
5.18.0 before 5.18.3; 5.17.0 before 5.17.6; 5.16.0 before 5.16.7; before 5.15.16 · source: vendor, NVD, KEV
AA
Apache ActiveMQ Legacy OpenWire Module · Apache Software Foundation
5.18.0 before 5.18.3; 5.17.0 before 5.17.6; 5.16.0 before 5.16.7; 5.8.0 before 5.15.16 · source: vendor
AL
Activemq Legacy Openwire Module · Apache
before 5.15.16; 5.16.0 before 5.16.7; 5.17.0 before 5.17.6; 5.18.0 before 5.18.3 · source: NVD
DL
Debian Linux · Debian
10.0; 11.0 · source: NVD
ES
E-series Santricity Unified Manager · Netapp
All versions, or not specified · source: NVD
ES
E-series Santricity Web Services Proxy · Netapp
All versions, or not specified · source: NVD
SS
Santricity Storage Plugin · Netapp
All versions, or not specified · source: NVD
In the news
VulnerabilityCritical
Armatura LLC Armatura One
View CSAF Summary Successful exploitation of these vulnerabilities could allow an attacker to gain unauthorized access to the database, execute arbitrary code on the host with the highest level of privilege, or gain control of the physical access-control system. The following versions of Armatura LLC Armatura One are affected: Armatura One <4.7.2 (CVE-2023-46604, CVE-2026-94591, CVE-2026-94592, CVE-2026-94593, CVE-2026-94594) Armatura One (USA) <4.6.1 (CVE-2023-46604, CVE-2026-94591, CVE-2026-94592, CVE-2026-94593, CVE-2026-94594) CVSS Vendor Equipment Vulnerabilities v3 9.8 Armatura LLC Armatura LLC Armatura One Deserialization of Untrusted Data, Use of Hard-coded Cryptographic Key, Use of Hard-coded Credentials, Insertion of Sensitive Information into Log File Background Critical Infrastructure Sectors: Communications, Critical Manufacturing, Energy, Transportation Systems Countries/Areas Deployed: Worldwide Company Headquarters Location: United States Vulnerabilities Expand All + CVE-2023-46604 Armatura One embeds Apache ActiveMQ, exposing its OpenWire protocol listener on the network by default. This embedded version is affected by CVE-2023-46604, a deserialization flaw in the OpenWire marshaller that allows an unauthenticated network attacker to trigger deserialization of an arbitrary object graph before authentication is checked. This can result in arbitrary code execut...
Oct 1, 2026·CISA Advisories
Affected product
AC
ActiveMQ
Apache
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