CVE-2026-10065Public exploitNetwork attack vector

Authenticated code execution via unbounded Date copy

Published May 29, 2026 · Updated May 29, 2026

Stack-based buffer overflow in Shibby Tomato 1.28 allows remote authenticated users to execute code through a crafted UPS Date field. The get_ups_field function in tomatodata.cgi copies the Date field returned by a configured UPS endpoint into a fixed-size stack buffer without enforcing its length. Low-privileged access and control of the UPS response are required; resulting stack corruption can crash the CGI process or redirect execution.

CVSS severity8.7
High
EPSS probability0.44%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in Shibby Tomato 1.28 allows remote authenticated users to execute code through a crafted UPS Date field. The get_ups_field function in tomatodata.cgi copies the Date field returned by a configured UPS endpoint into a fixed-size stack buffer without enforcing its length. Low-privileged access and control of the UPS response are required; resulting stack corruption can crash the CGI process or redirect execution.

The record

CVE
CVE-2026-10065
Published
May 29, 2026
Updated
May 29, 2026
Vendor
Shibby
Product
Tomato
Classifications
CWE-119, CWE-121, T1210
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 29, 2026CVE publishedPublication date reported by the CVE source.
  2. May 29, 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.

  1. Affected versionversion=1.28

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Shibby · Tomatoversion=1.28

Published CVSS scores

8.8VulDB CNACVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
9.0VulDB CNAAV:N/AC:L/Au:S/C:C/I:C/A:C
8.7VulDB CNACVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-121Stack-based Buffer Overflow
T1210Exploitation of Remote Services

Public exploit references

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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