How severe is CVE-2021-41033?

CVE-2021-41033 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-41033 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-41033?

CVE-2021-41033 primarily affects Eclipse Equinox. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-41033?

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-2021-41033 published?

CVE-2021-41033 was published on 2021-09-13 and last updated on 2026-06-17.

CVE-2021-41033

CVE-2021-41033 is a high-severity vulnerability in Eclipse Equinox with a CVSS 3.x base score of 8.1. 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-300.

Key facts

Severity: High (CVSS 3.x base score 8.1)
CVSS v2: 6.8
EPSS exploit prediction: 1% (62nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-300
Affected product: Eclipse Equinox
Published: 2021-09-13
Last modified: 2026-06-17

Description

In all released versions of Eclipse Equinox, at least until version 4.21 (September 2021), installation can be vulnerable to man-in-the-middle attack if using p2 repos that are HTTP; that can then be exploited to serve incorrect p2 metadata and entirely alter the local installation, particularly by installing plug-ins that may then run malicious code.

Frequently asked questions

What is CVE-2021-41033?: In all released versions of Eclipse Equinox, at least until version 4.21 (September 2021), installation can be vulnerable to man-in-the-middle attack if using p2 repos that are HTTP; that can then be exploited to serve incorrect p2 metadata and entirely alter the local installation, particularly by installing plug-ins that may then run malicious code.
How severe is CVE-2021-41033?: CVE-2021-41033 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-41033 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-41033?: CVE-2021-41033 primarily affects Eclipse Equinox. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-41033?: 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-2021-41033 published?: CVE-2021-41033 was published on 2021-09-13 and last updated on 2026-06-17.

References

https://bugs.eclipse.org/bugs/show_bug.cgi?id=575688

Affected products (2)

cpe:2.3:a:eclipse:equinox:*:*:*:*:*:*:*:*
cpe:2.3:a:eclipse:equinox:4.21:*:*:*:*:*:*:*

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