CWE-502: Deserialization of untrusted data vulnerability exists that could lead to loss of confidentiality, integrity and potential remote…

published 2026-03-10 8 mo ago modified 2026-06-24 4 mo ago also EUVD-2026-10565

cvss: 6.5; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 33%
public exploits: 0; none known

CWE-502: Deserialization of untrusted data vulnerability exists that could lead to loss of confidentiality, integrity and potential remote code execution on workstation when an admin authenticated user opens a malicious project file.

Patch / fix

fixed in 1

schneider-electric ecostruxure_foxboro_dcs_control_software 8.1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-26-083-02 updated 2026-03-24 cvss 6.5

Schneider Electric EcoStruxure Foxboro DCS

Schneider Electric EcoStruxure Foxboro DCS < CS8.1
affected: vendor fix, mitigation buyautomation.se.com
Schneider Electric EcoStruxure Foxboro DCS CS8.1
fixed

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 8 mo ago (2026-03-10)

Exploit prediction

0.39% chance of exploitation in the next 30 days, higher than 33% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	4.0	7.0	CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CNA	4.0	7.0	CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
NVD	3.1	6.5	CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H

Affected products

Schneider Electric EcoStruxure™ Foxboro DCS

Classification

Weakness

CWE-502 Deserialization of Untrusted Data

References

download.schneider-electric.com /files?p_Doc_Ref=SEVD-2026-069-03&p_enDocType=Security+and+Safety+Notice&p_File_Name=SEVD-2026-069-03.pdf
vendor-advisory, mitigation

Sources

CVE List CVE-2026-1286
NVD CVE-2026-1286

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