CVE-2026-81946

Privileged password recovery via HMAC-MD5 configuration hash

Published Sep 18, 2026 · Updated Sep 18, 2026

Weak password hashing in PLANET IGS-5225-8P2T4S V1 and V2 firmware allows local users to recover a privileged-mode password. The exported device configuration stores the privileged-mode credential with HMAC-MD5, allowing offline recovery from the weak digest. Privileged access is required to obtain the configuration file; disclosure is limited to the stored privileged-mode password.

CVSS severity6.7
Medium
EPSS probability0.17%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Weak password hashing in PLANET IGS-5225-8P2T4S V1 and V2 firmware allows local users to recover a privileged-mode password. The exported device configuration stores the privileged-mode credential with HMAC-MD5, allowing offline recovery from the weak digest. Privileged access is required to obtain the configuration file; disclosure is limited to the stored privileged-mode password.

The record

CVE
CVE-2026-81946
Published
Sep 18, 2026
Updated
Sep 18, 2026
Vendor
PLANET Technology Corp.
Product
IGS-5225-8P2T4S
Classifications
CWE-121, T1110.002
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Sep 18, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 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.

  1. Affected versionversion=0 <1.2412b260707
  2. Affected versionversion=0 <2.2412b260519

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

PLANET Technology Corp. · IGS-5225-8P2T4Sversion=0 <1.2412b260707; version=0 <2.2412b260519

Published CVSS scores

4.4PLANET Technology Corp.CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
6.7PLANET Technology Corp.CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/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.

Activity data is delayed. The latest report is Sep 28, 2026.

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

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow
T1110.002Password Cracking

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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