How severe is CVE-2021-40341?

CVE-2021-40341 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2021-40341 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-40341?

CVE-2021-40341 primarily affects Hitachienergy Foxman-un. In total, 18 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-40341?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-40341 published?

CVE-2021-40341 was published on 2023-01-05 and last updated on 2026-06-17.

CVE-2021-40341

CVE-2021-40341 is a high-severity vulnerability in Hitachienergy Foxman-un with a CVSS 3.x base score of 7.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-326.

Key facts

Severity: High (CVSS 3.x base score 7.1)
EPSS exploit prediction: 0% (1st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-326
Affected product: Hitachienergy Foxman-un
Published: 2023-01-05
Last modified: 2026-06-17

Description

DES cipher, which has inadequate encryption strength, is used Hitachi Energy FOXMAN-UN to encrypt user credentials used to access the Network Elements. Successful exploitation allows sensitive information to be decrypted easily. 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:*:*:*:*:*:*:*

Frequently asked questions

What is CVE-2021-40341?: DES cipher, which has inadequate encryption strength, is used Hitachi Energy FOXMAN-UN to encrypt user credentials used to access the Network Elements. Successful exploitation allows sensitive information to be decrypted easily. 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:*:*:*:*:*:*:*
How severe is CVE-2021-40341?: CVE-2021-40341 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2021-40341 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-40341?: CVE-2021-40341 primarily affects Hitachienergy Foxman-un. In total, 18 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-40341?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-40341 published?: CVE-2021-40341 was published on 2023-01-05 and last updated on 2026-06-17.

References

Affected products (18)

cpe:2.3:a:hitachienergy:foxman-un:r9c:*:*:*:*:*:*:*
cpe:2.3:a:hitachienergy:foxman-un:r10c:*:*:*:*:*:*:*
cpe:2.3:a:hitachienergy:foxman-un:r11a:*:*:*:*:*:*:*
cpe:2.3:a:hitachienergy:foxman-un:r11b:*:*:*:*:*:*:*
cpe:2.3:a:hitachienergy:foxman-un:r14a:*:*:*:*:*:*:*
cpe:2.3:a:hitachienergy:foxman-un:r14b:*:*:*:*:*:*:*
cpe:2.3:a:hitachienergy:foxman-un:r15a:*:*:*:*:*:*:*
cpe:2.3:a:hitachienergy:foxman-un:r15b:*:*:*:*:*:*:*
cpe:2.3:a:hitachienergy:foxman-un:r16a:*:*:*:*:*:*:*
cpe:2.3:a:hitachienergy:unem:r9c:*:*:*:*:*:*:*
cpe:2.3:a:hitachienergy:unem:r10c:*:*:*:*:*:*:*
cpe:2.3:a:hitachienergy:unem:r11a:*:*:*:*:*:*:*
cpe:2.3:a:hitachienergy:unem:r11b:*:*:*:*:*:*:*
cpe:2.3:a:hitachienergy:unem:r14a:*:*:*:*:*:*:*
cpe:2.3:a:hitachienergy:unem:r14b:*:*:*:*:*:*:*
cpe:2.3:a:hitachienergy:unem:r15a:*:*:*:*:*:*:*
cpe:2.3:a:hitachienergy:unem:r15b:*:*:*:*:*:*:*
cpe:2.3:a:hitachienergy:unem:r16a:*:*:*:*:*:*:*

More vulnerabilities in Hitachienergy Foxman-un

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