Security readout for executives and security teams
Plain-English summary
CVE-2023-46604 lets a remote attacker run commands through Apache ActiveMQ's OpenWire handling when reachable brokers or clients process manipulated serialized data. It is critical because exploitation requires network access but no authentication or user interaction. CISA lists it as known exploited, so internet-exposed or partner-facing messaging infrastructure needs urgent attention.
Executive priority
Treat this as an immediate remediation item for any ActiveMQ deployment. The combination of remote code execution, unauthenticated network attack path, CVSS 10.0, and CISA known-exploited status creates material business risk, especially for messaging systems that connect business applications or expose partner integrations.
Technical view
The Java OpenWire protocol marshaller can instantiate attacker-controlled class types on the classpath, leading to remote code execution in a Java-based broker or client. The issue is CWE-502 deserialization, CVSS 10.0, affecting Apache ActiveMQ and the Legacy OpenWire module. Apache recommends upgrading brokers and clients to fixed 5.15.16, 5.16.7, 5.17.6, or 5.18.3 releases.
Likely exposure
Exposure is most likely where Apache ActiveMQ brokers or Java OpenWire clients are reachable over networks, especially public, partner, or flat internal networks. Systems using org.apache.activemq:activemq-client or activemq-openwire-legacy should be inventoried. Evidence provided does not identify every downstream product beyond Apache, Debian, and NetApp advisory coverage.
Exploitation context
Active exploitation is supported by CISA KEV listing for CVE-2023-46604. Public references also include unauthenticated remote code execution material, increasing operational risk. The source bundle does not provide victim scope, attacker attribution, or safe detection signatures, so validation should focus on exposure, versions, and vendor guidance.
Researcher notes
Focus analysis on OpenWire exposure paths, broker and client versioning, and classpath-dependent impact. The provided sources support RCE through unsafe deserialization but do not provide complete downstream product coverage or authoritative detection logic. Avoid assuming only brokers are affected; Apache explicitly includes Java-based clients.
Mitigation direction
- Upgrade brokers and clients to fixed Apache ActiveMQ versions named by Apache.
- Prioritize internet-facing and partner-accessible OpenWire services first.
- Restrict network access to OpenWire endpoints until upgrades are complete.
- Check Debian, NetApp, and other vendor advisories for packaged fixes.
- Confirm both broker and client dependencies are updated, not only servers.
Validation and detection
- Inventory ActiveMQ brokers and Java OpenWire client dependencies.
- Compare deployed versions against Apache fixed releases.
- Identify OpenWire endpoints reachable from untrusted networks.
- Review vendor package advisories for distro or appliance-specific status.
- Check CISA KEV tracking for required remediation urgency.
Public sources used
Michael Williams reviewed this cited source version on .
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-502: Code execution behavior lookup
Code execution and unsafe deserialization weaknesses often justify reviewing execution behavior and process telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2023-46604 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Critical
- CVSS
- 10 (3.1)
- Known Exploited
- Yes
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CISA KEV status
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:H3.96Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
10CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://activemq.apache.org/security-advisories.data/CVE-2023-46604-announcement.txtCVE reference · vendor-advisory
- https://www.openwall.com/lists/oss-security/2023/10/27/5CVE reference
- https://security.netapp.com/advisory/ntap-20231110-0010/CVE reference
- https://packetstormsecurity.com/files/175676/Apache-ActiveMQ-Unauthenticated-Remote-Code-Execution.htmlCVE reference
- https://lists.debian.org/debian-lts-announce/2023/11/msg00013.htmlCVE reference
- https://lists.debian.org/debian-lts-announce/2024/10/msg00027.htmlCVE reference
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-46604CVE reference · government-resource
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Deserialization of Untrusted Data
Deserialization of Untrusted Data represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.