Worker restart via MQTT heap buffer over-read
Published Jul 15, 2026 · Updated Jul 15, 2026
Heap buffer over-read in the MQTT filter module in F5 NGINX Plus allows remote attackers to restart an NGINX worker process. F5 identifies ngx_stream_mqtt_filter_module as the locus but has not disclosed which MQTT field or length operation reads past the heap buffer. Exploitation requires the optional MQTT filter configuration and conditions beyond attacker control; the reported effect is a data-plane worker restart without control-plane exposure.
Summary
What happened
Heap buffer over-read in the MQTT filter module in F5 NGINX Plus allows remote attackers to restart an NGINX worker process. F5 identifies ngx_stream_mqtt_filter_module as the locus but has not disclosed which MQTT field or length operation reads past the heap buffer. Exploitation requires the optional MQTT filter configuration and conditions beyond attacker control; the reported effect is a data-plane worker restart without control-plane exposure.
The record
- CVE
- CVE-2026-60065
- Published
- Jul 15, 2026
- Updated
- Jul 15, 2026
- Vendor
- F5 Networks
- Product
- NGINX Plus
- Classifications
- CWE-125, T1499
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jul 15, 2026CVE publishedPublication date reported by the CVE source.
- Jul 15, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=37.0.0.1 <37.0.3.1
- Affected versionversion=R33 <*
- Affected versionversion=R36 <R36 P7
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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