Memory corruption via ct_tcp_timeout out-of-bounds write
Published Jul 18, 2026 · Updated Jul 18, 2026
Out-of-bounds write in Shibby Tomato 1.28 RT-N5x MIPSR2 Build 124 allows remote authenticated users to corrupt process memory. The setup_conntrack function in /sbin/rc uses attacker-controlled ct_tcp_timeout data in a write that exceeds the destination buffer's bounds. Low-privilege network access is required; successful exploitation corrupts process memory, while public evidence does not demonstrate code execution.
Summary
What happened
Out-of-bounds write in Shibby Tomato 1.28 RT-N5x MIPSR2 Build 124 allows remote authenticated users to corrupt process memory. The setup_conntrack function in /sbin/rc uses attacker-controlled ct_tcp_timeout data in a write that exceeds the destination buffer's bounds. Low-privilege network access is required; successful exploitation corrupts process memory, while public evidence does not demonstrate code execution.
The record
- CVE
- CVE-2026-16095
- Published
- Jul 18, 2026
- Updated
- Jul 18, 2026
- Vendor
- Shibby
- Product
- Tomato
- Classifications
- CWE-787, CWE-119
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jul 18, 2026CVE publishedPublication date reported by the CVE source.
- Jul 18, 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=1.28 RT-N5x MIPSR2 Build 124
What conditions does exploitation require?
What is affected?
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.
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Technologies
Your stack
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Your stack
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