A CWE-494 Download of Code Without Integrity Check vulnerability exists that could allow modified firmware to be uploaded when an authorize…

published 2023-11-15 2 y ago modified 2026-06-17 4 mo ago also EUVD-2023-58251

cvss: 7.2; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 23%
public exploits: 0; none known

A CWE-494 Download of Code Without Integrity Check vulnerability exists that could allow modified firmware to be uploaded when an authorized admin user begins a firmware update procedure which could result in full control over the device.

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 13 mo ago (2025-09-30)

Exploit prediction

0.31% chance of exploitation in the next 30 days, higher than 23% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	7.2	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
NVD	3.1	4.9	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N

Affected products

Schneider Electric ION8650
Schneider Electric ION8800

Classification

Weakness

CWE-494 Download of Code Without Integrity Check

References

download.schneider-electric.com /files?p_Doc_Ref=SEVD-2023-318-01&p_enDocType=Security+and+Safety+Notice&p_File_Name=SEVD-2023-318-01.pdf
vendor-advisory

Sources

CVE List CVE-2023-5984
NVD CVE-2023-5984

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary