CyberSecBulletin
CVE-2022-40269NVD status: Modified

GOT2000 Series GT27 model: Authentication Bypass by Spoofing

Published Updated By the CyberSecBulletin desk

CVE-2022-40269 is a high-severity authentication bypass by spoofing vulnerability in GOT2000 Series GT27 model from Mitsubishi Electric, with a CVSS 3.1 base score of 8.1 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, but only if a user takes part, for example by opening a link or file. Affected GOT2000 Series GT27 model versions: 01.14.000 to 01.47.000. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.7% chance of exploitation within 30 days, higher than 54% of scored CVEs.

Next patch cycle

High severity with no evidence of exploitation so far.

What to do

  1. Update Gt27 Firmware to 01.48.000 or a later version.
  2. Update Gt25 Firmware to 01.48.000 or a later version.
  3. Read the advisory on mitsubishielectric.com for workarounds and exact fixed builds.
  4. Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.
  5. Because the attack needs a user to take part, warn users about unexpected links and files related to this product until it is patched.

Affected products and versions

VendorProductAffected versionsFixed in
Mitsubishi ElectricGOT2000 Series GT27 model01.14.000 to 01.47.000Not stated
Mitsubishi ElectricGOT2000 Series GT25 model01.14.000 to 01.47.000Not stated
Mitsubishi ElectricGT SoftGOT20001.265B to 1.285XNot stated
Mitsubishi ElectricGt27 Firmware01.14.000 up to, but not including, 01.48.00001.48.000
Mitsubishi ElectricGt25 Firmware01.14.000 up to, but not including, 01.48.00001.48.000

Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.

How the severity score breaks down

Attack vector
NetworkCan be exploited remotely over a network, including the internet.
Attack complexity
LowNo special conditions are needed; the attack works reliably.
Privileges required
NoneNo account or login is needed.
User interaction
RequiredA user must take an action such as opening a file or link.
Scope
UnchangedImpact stays within the vulnerable component.
Confidentiality
HighAll data handled by the component can be read.
Integrity
HighData or code can be modified at will.
Availability
NoneAvailability is not affected.

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N. Scored by NVD.

Scoring systemScoreSeverityScored by
CVSS 3.16.8MediumCNA (yd.MitsubishiElectric.co.jp)
CVSS 3.18.1HighNVD

Official description

Authentication Bypass by Spoofing vulnerability in Mitsubishi Electric Corporation GOT2000 Series GT27 model versions 01.14.000 to 01.47.000, Mitsubishi Electric Corporation GOT2000 Series GT25 model versions 01.14.000 to 01.47.000 and Mitsubishi Electric Corporation GT SoftGOT2000 versions 1.265B to 1.285X allows a remote unauthenticated attacker to disclose sensitive information from users' browsers or spoof legitimate users by abusing inappropriate HTML attributes.

Source: the CVE record as published by its numbering authority, via NVD and CVE.org.

The underlying weakness: Authentication Bypass by Spoofing

This attack-focused weakness is caused by incorrectly implemented authentication schemes that are subject to spoofing attacks.

More Authentication Bypass by Spoofing vulnerabilities (CWE-290)

Timeline

  1. CVE record published.
  2. CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: partial).
  3. Record last changed materially (score, affected products, status or references).

References

Third-party and government advisories

Other vulnerabilities in GOT2000 Series GT27 model

All GOT2000 Series GT27 model vulnerabilities

Recent Authentication Bypass by Spoofing vulnerabilities

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