Authenticated memory corruption via undisclosed webmon input
Published Jul 18, 2026 · Updated Jul 18, 2026
Stack-based buffer overflow in Shibby Tomato 1.28 RT-N5x MIPSR2 Build 124 allows remote authenticated users to corrupt router memory. The public record identifies sub_40BB50 and /proc/webmon_recent_domains but does not disclose the attacker-controlled input or unsafe operation. Low-privileged network access is required, and successful exploitation compromises confidentiality, integrity, and availability on the router.
Summary
What happened
Stack-based buffer overflow in Shibby Tomato 1.28 RT-N5x MIPSR2 Build 124 allows remote authenticated users to corrupt router memory. The public record identifies sub_40BB50 and /proc/webmon_recent_domains but does not disclose the attacker-controlled input or unsafe operation. Low-privileged network access is required, and successful exploitation compromises confidentiality, integrity, and availability on the router.
The record
- CVE
- CVE-2026-16096
- Published
- Jul 18, 2026
- Updated
- Jul 18, 2026
- Vendor
- Shibby
- Product
- Tomato
- Classifications
- CWE-121, 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?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=1.28 RT-N5x MIPSR2 Build 124
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
- Public Gitee proof-of-concept issueproof of concept · unverified
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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