No exploitation reported

CVE-2023-2846

No exploitation reported by the sources we read.

Published2023-06-30
WeaknessCWE-294

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Authentication Bypass by Capture-replay vulnerability in Mitsubishi Electric Corporation MELSEC iQ-F Series main modules allows a remote unauthenticated attacker to cancel the password/keyword setting and login to the affected products by sending specially crafted packets.

Timeline

dates in UTC

2023-06-3005:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2023-2846?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2023-2846?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Mitsubishielectric fx3g-14mr\/ds firmwareversion to verify

Branch	Affected	Fixed in	Source
—	all versions	no fix published	NVD

Mitsubishielectric fx3g-14mr\/es firmwareversion to verify

Branch	Affected	Fixed in	Source
—	all versions	no fix published	NVD

Mitsubishielectric fx3g-14mr\/es-a firmwareversion to verify

Branch	Affected	Fixed in	Source
—	all versions	no fix published	NVD

147 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

ICSA-23-180-04 CISA16 known affected
Mitsubishi Electric MELSEC-F Series
FX3GE-xMy/z x=24,40, y=T,R, z=ES,ESS,DS,DSS: * · FX3U-xMy/z x=16,32,48,64,80,128, y=T,R, z=ES,ESS,DS,DSS: * · FX3U-32MR/UA1, FX3U-64MR/UA1: * · +13 more

Full record on NVD

Fix

Mitigation from the vendor CISA ICSA-23-180-04 · 16 productsMitsubishi Electric recommends customers take the following mitigation measures to minimize the risk of an attacker exploiting this vulnerability:
Mitigation from the vendor CISA ICSA-23-180-04 · 16 productsUse a firewall or virtual private network (VPN), etc., to prevent unauthorized access when internet access is required.
Mitigation from the vendor CISA ICSA-23-180-04 · 16 productsUse within a LAN and block access from untrusted networks and hosts through firewalls.
Mitigation from the vendor CISA ICSA-23-180-04 · 16 productsRestrict physical access to affected products and the LAN they connect.
Mitigation from the vendor CISA ICSA-23-180-04 · 16 productsFor specific update instructions and additional details, see the Mitsubishi Electric advisory.

Advisories and patches

jvn.jpMitigation
www.cisa.govMitigation
www.mitsubishielectric.comMitigation · Vendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

CISA-ADPSSVC decisionnone2025-03-05
OpenCVESSVC decisionnone—
CNACVSS 3.17.5read 2026-10-23
NVDCVSS 3.19.1read 2026-10-23
CNAweakness (CWE)CWE-294read 2026-10-23
NVDweakness (CWE)CWE-294read 2026-10-23
FIRST EPSSEPSS score1.3 %2026-10-23

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Published: 2023-06-30
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2023-2846?

Is CVE-2023-2846 actively exploited?

Active exploitation of CVE-2023-2846 has not been confirmed. Its EPSS score was 1.3% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2023-2846?

CVE-2023-2846 has a CVSS v3 base score of 9.1 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.

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