CVE-2021-40342

Name: CVE-2021-40342
Creator: NVD / NIST
Published: 2023-01-05T22:15:08.953+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 0.28%

Last modified Jun 17, 2026

CVE-2021-40342 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. In the DES implementation, the affected product versions use a default key for encryption. Successful exploitation allows an attacker to obtain sensitive information and gain access to the network elements that are managed by the affected products versions. This issue affects * FOXMAN-UN product: FOXMAN-UN R16A, FOXMAN-UN R15B, FOXMAN-UN R15A, FOXMAN-UN R14B, FOXMAN-UN R14A, FOXMAN-UN R11B, FOXMAN-UN R11A, FOXMAN-UN R10C, FOXMAN-UN R9C; * UNEM product: UNEM R16A, UNEM R15B, UNEM R15A, UNEM R14B, UNEM R14A, UNEM R11B, UNEM R11A, UNEM R10C, UNEM R9C. List of CPEs: * cpe:2.3:a:hitachienergy:foxman-un:R16A:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:foxman-un:R15B:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:foxman-un:R15A:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:foxman-un:R14B:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:foxman-un:R14A:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:foxman-un:R11B:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:foxman-un:R11A:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:foxman-un:R10C:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:foxman-un:R9C:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:unem:R16A:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:unem:R15B:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:unem:R15A:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:unem:R14B:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:unem:R14A:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:unem:R11B:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:unem:R11A:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:unem:R10C:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:unem:R9C:*:*:*:*:*:*:* . EPSS estimates a 0.28% chance of exploitation in the next 30 days.

Description

In the DES implementation, the affected product versions use a default key for encryption. Successful exploitation allows an attacker to obtain sensitive information and gain access to the network elements that are managed by the affected products versions. This issue affects * FOXMAN-UN product: FOXMAN-UN R16A, FOXMAN-UN R15B, FOXMAN-UN R15A, FOXMAN-UN R14B, FOXMAN-UN R14A, FOXMAN-UN R11B, FOXMAN-UN R11A, FOXMAN-UN R10C, FOXMAN-UN R9C; * UNEM product: UNEM R16A, UNEM R15B, UNEM R15A, UNEM R14B, UNEM R14A, UNEM R11B, UNEM R11A, UNEM R10C, UNEM R9C. List of CPEs: * cpe:2.3:a:hitachienergy:foxman-un:R16A:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:foxman-un:R15B:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:foxman-un:R15A:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:foxman-un:R14B:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:foxman-un:R14A:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:foxman-un:R11B:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:foxman-un:R11A:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:foxman-un:R10C:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:foxman-un:R9C:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:unem:R16A:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:unem:R15B:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:unem:R15A:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:unem:R14B:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:unem:R14A:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:unem:R11B:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:unem:R11A:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:unem:R10C:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:unem:R9C:*:*:*:*:*:*:*

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.28%

20.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Hitachienergy	Foxman-Un	r9c
Hitachienergy	Foxman-Un	r10c
Hitachienergy	Foxman-Un	r11a
Hitachienergy	Foxman-Un	r11b
Hitachienergy	Foxman-Un	r14a
Hitachienergy	Foxman-Un	r14b
Hitachienergy	Foxman-Un	r15a
Hitachienergy	Foxman-Un	r15b
Hitachienergy	Foxman-Un	r16a
Hitachienergy	Unem	r9c
Hitachienergy	Unem	r10c
Hitachienergy	Unem	r11a
Hitachienergy	Unem	r11b
Hitachienergy	Unem	r14a
Hitachienergy	Unem	r14b
Hitachienergy	Unem	r15a
Hitachienergy	Unem	r15b
Hitachienergy	Unem	r16a

References

https://search.abb.com/library/Download.aspx?DocumentID=8DBD000083&LanguageCode=en&DocumentPartId=&Action=LaunchMitigation, Vendor Advisory
https://search.abb.com/library/Download.aspx?DocumentID=8DBD000084&LanguageCode=en&DocumentPartId=&Action=LaunchMitigation, Vendor Advisory
https://search.abb.com/library/Download.aspx?DocumentID=8DBD000083&LanguageCode=en&DocumentPartId=&Action=LaunchMitigation, Vendor Advisory
https://search.abb.com/library/Download.aspx?DocumentID=8DBD000084&LanguageCode=en&DocumentPartId=&Action=LaunchMitigation, Vendor Advisory

Timeline

Published: Jan 5, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-40342?

How severe is CVE-2021-40342?

CVE-2021-40342 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.28% probability of exploitation in the next 30 days.

How do I fix CVE-2021-40342?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-40342?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST