How severe is CVE-2021-41042?

CVE-2021-41042 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2021-41042 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-41042?

CVE-2021-41042 affects Eclipse Lyo. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-41042?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-41042 published?

CVE-2021-41042 was published on 2022-07-07 and last updated on 2026-06-17.

CVE-2021-41042

CVE-2021-41042 is a medium-severity vulnerability in Eclipse Lyo with a CVSS 3.x base score of 5.3. 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-611.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
EPSS exploit prediction: 1% (57th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-611
Affected product: Eclipse Lyo
Published: 2022-07-07
Last modified: 2026-06-17

Description

In Eclipse Lyo versions 1.0.0 to 4.1.0, a TransformerFactory is initialized with the defaults that do not restrict DTD loading when working with RDF/XML. This allows an attacker to cause an external DTD to be retrieved.

Frequently asked questions

What is CVE-2021-41042?: In Eclipse Lyo versions 1.0.0 to 4.1.0, a TransformerFactory is initialized with the defaults that do not restrict DTD loading when working with RDF/XML. This allows an attacker to cause an external DTD to be retrieved.
How severe is CVE-2021-41042?: CVE-2021-41042 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2021-41042 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-41042?: CVE-2021-41042 affects Eclipse Lyo. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-41042?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-41042 published?: CVE-2021-41042 was published on 2022-07-07 and last updated on 2026-06-17.

References

https://gitlab.eclipse.org/eclipsefdn/emo-team/emo/-/issues/287

Affected products (1)

cpe:2.3:a:eclipse:lyo:*:*:*:*:*:*:*:*

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