How severe is CVE-2025-22940?

CVE-2025-22940 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2025-22940 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-22940?

CVE-2025-22940 affects Adtran 411 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-22940?

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

Does CVE-2025-22940 have an EU (EUVD) identifier?

Yes. CVE-2025-22940 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-8763.

When was CVE-2025-22940 published?

CVE-2025-22940 was published on 2025-03-31 and last updated on 2026-06-17.

CVE-2025-22940

CVE-2025-22940 is a critical-severity vulnerability in Adtran 411 Firmware with a CVSS 3.x base score of 9.1. 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-284.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
EPSS exploit prediction: 0% (36th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-8763
Weakness: CWE-284
Affected product: Adtran 411 Firmware
Published: 2025-03-31
Last modified: 2026-06-17

Description

Incorrect access control in Adtran 411 ONT L80.00.0011.M2 allows unauthorized attackers to arbitrarily set the admin password.

Frequently asked questions

What is CVE-2025-22940?: Incorrect access control in Adtran 411 ONT L80.00.0011.M2 allows unauthorized attackers to arbitrarily set the admin password.
How severe is CVE-2025-22940?: CVE-2025-22940 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2025-22940 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-22940?: CVE-2025-22940 affects Adtran 411 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-22940?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2025-22940 have an EU (EUVD) identifier?: Yes. CVE-2025-22940 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-8763.
When was CVE-2025-22940 published?: CVE-2025-22940 was published on 2025-03-31 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:adtran:411_firmware:l80.00.0011.m2:*:*:*:*:*:*:*

More vulnerabilities in Adtran 411 Firmware

CVE-2025-22941 — Critical (CVSS 9.8): A command injection vulnerability in the web interface of Adtran 411 ONT L80.00.0011.M2 allows attackers to escalate…
CVE-2025-22939 — Critical (CVSS 9.8): A command injection vulnerability in the telnet service of Adtran 411 ONT L80.00.0011.M2 allows attackers to escalate…
CVE-2025-22938 — Critical (CVSS 9.8): Adtran 411 ONT L80.00.0011.M2 was discovered to contain weak default passwords.
CVE-2025-22937 — Critical (CVSS 9.8): An issue in Adtran 411 ONT vL80.00.0011.M2 allows attackers to escalate privileges via unspecified vectors.

All CVEs affecting Adtran 411 Firmware →

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