CVE-2026-64940Network attack vector

Unauthenticated management access via permissive regex

Published Aug 10, 2026 · Updated Aug 10, 2026

Authentication bypass in Nishishi Factory Tegalog 4.8.4 and earlier allows remote attackers to access the management console. Published advisories identify an overly permissive regular expression in the login path but do not disclose the affected field, pattern, or matching operation. No credentials or user interaction are required; successful access permits any operation exposed by the management console, although the public record does not enumerate those operations.

CVSS severity8.6
High
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in Nishishi Factory Tegalog 4.8.4 and earlier allows remote attackers to access the management console. Published advisories identify an overly permissive regular expression in the login path but do not disclose the affected field, pattern, or matching operation. No credentials or user interaction are required; successful access permits any operation exposed by the management console, although the public record does not enumerate those operations.

The record

CVE
CVE-2026-64940
Published
Aug 10, 2026
Updated
Aug 10, 2026
Vendor
Nishishi Factory
Product
Tegalog
Classifications
CWE-625, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 10, 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=0 <=4.8.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Nishishi Factory · Tegalogversion=0 <=4.8.4

Published CVSS scores

8.8JPCERT/CCCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N
8.6JPCERT/CCCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-625Permissive Regular Expression
T1190Exploit Public-Facing Application

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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