A miscommunication in the file system allows adversaries with access to the MU320E to escalate privileges on the MU320E (all firmware versi…

published 2021-03-25 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-14202

cvss: 7.8; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 15%
public exploits: 0; none known

A miscommunication in the file system allows adversaries with access to the MU320E to escalate privileges on the MU320E (all firmware versions prior to v04A00.1).

Patch / fix

fixed in 1

ge mu320e_firmware 04a00.1

Vendor advisories

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

cisa ICSA-21-082-02 updated 2021-03-23 cvss 7.8

GE MU320E

General Electric (GE) MU320E All firmware < 04A00.1
affected: mitigation “GE recommends MU320E users upgrade to firmware v04A00.1 or higher to mitigate these vulnerabilities.” gegridsolutions.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

Exploit prediction

0.24% chance of exploitation in the next 30 days, higher than 15% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.1	7.8	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	4.6	AV:L/AC:L/Au:N/C:P/I:P/A:P

Affected products

n/a MU320E

Classification

Weakness

CWE-250 Execution with Unnecessary Privileges
CWE-269 Improper Privilege Management

References

us-cert.cisa.gov /ics/advisories/icsa-21-082-02
third-party-advisory, us-government-resource

Sources

CVE List CVE-2021-27448
NVD CVE-2021-27448

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