How severe is CVE-2021-41040?

CVE-2021-41040 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2021-41040 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-41040?

CVE-2021-41040 affects Eclipse Wakaama. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-41040?

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-2021-41040 published?

CVE-2021-41040 was published on 2022-02-01 and last updated on 2026-06-17.

CVE-2021-41040

CVE-2021-41040 is a high-severity vulnerability in Eclipse Wakaama with a CVSS 3.x base score of 7.5. 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-125.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (68th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-125
Affected product: Eclipse Wakaama
Published: 2022-02-01
Last modified: 2026-06-17

Description

In Eclipse Wakaama, ever since its inception until 2021-01-14, the CoAP parsing code does not properly sanitize network-received data.

Frequently asked questions

What is CVE-2021-41040?: In Eclipse Wakaama, ever since its inception until 2021-01-14, the CoAP parsing code does not properly sanitize network-received data.
How severe is CVE-2021-41040?: CVE-2021-41040 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2021-41040 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-41040?: CVE-2021-41040 affects Eclipse Wakaama. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-41040?: 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-2021-41040 published?: CVE-2021-41040 was published on 2022-02-01 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:eclipse:wakaama:1.0:*:*:*:*:*:*:*

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