Unauthenticated data disclosure via crafted packet overflow
Published Sep 1, 2026 · Updated Sep 2, 2026
Buffer overflow in HPE AOS-CX 10.10, 10.13, 10.16, 10.17, and 10.18 branches allows attackers to disclose data via crafted packets. HPE has not identified the packet-processing locus or the unchecked memory operation that allows crafted packets to overrun a buffer. Exploitation requires adjacent-network access and no authentication; successful attacks can also modify limited information and disrupt the switch.
Summary
What happened
Buffer overflow in HPE AOS-CX 10.10, 10.13, 10.16, 10.17, and 10.18 branches allows attackers to disclose data via crafted packets. HPE has not identified the packet-processing locus or the unchecked memory operation that allows crafted packets to overrun a buffer. Exploitation requires adjacent-network access and no authentication; successful attacks can also modify limited information and disrupt the switch.
The record
- CVE
- CVE-2026-73774
- Published
- Sep 1, 2026
- Updated
- Sep 2, 2026
- Vendor
- Hewlett Packard Enterprise (HPE)
- Product
- AOS-CX
- Classifications
- CWE-120, T1499.004
- Attack vector
- adjacent
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 1, 2026CVE publishedPublication date reported by the CVE source.
- Sep 2, 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?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=10.10.0000 <=10.10.1180
- Affected versionversion=10.13.0000 <=10.13.1180
- Affected versionversion=10.16.0000 <=10.16.1051
- Affected versionversion=10.17.0000 <=10.17.1021
- Affected versionversion=10.18.0000 <=10.18.0001
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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