How severe is CVE-2021-41078?

CVE-2021-41078 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-41078 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-41078?

CVE-2021-41078 primarily affects Nameko. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-41078?

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-2021-41078 published?

CVE-2021-41078 was published on 2021-10-26 and last updated on 2026-06-17.

CVE-2021-41078

CVE-2021-41078 is a high-severity vulnerability in Nameko with a CVSS 3.x base score of 7.8. 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-502.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 6.8
EPSS exploit prediction: 1% (71st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-502
Affected product: Nameko
Published: 2021-10-26
Last modified: 2026-06-17

Description

Nameko through 2.13.0 can be tricked into performing arbitrary code execution when deserializing the config file.

Frequently asked questions

What is CVE-2021-41078?: Nameko through 2.13.0 can be tricked into performing arbitrary code execution when deserializing the config file.
How severe is CVE-2021-41078?: CVE-2021-41078 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-41078 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-41078?: CVE-2021-41078 primarily affects Nameko. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-41078?: 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-2021-41078 published?: CVE-2021-41078 was published on 2021-10-26 and last updated on 2026-06-17.

References

Affected products (10)

cpe:2.3:a:nameko:nameko:*:*:*:*:*:*:*:*
cpe:2.3:a:nameko:nameko:3.0.0:rc1:*:*:*:*:*:*
cpe:2.3:a:nameko:nameko:3.0.0:rc2:*:*:*:*:*:*
cpe:2.3:a:nameko:nameko:3.0.0:rc3:*:*:*:*:*:*
cpe:2.3:a:nameko:nameko:3.0.0:rc4:*:*:*:*:*:*
cpe:2.3:a:nameko:nameko:3.0.0:rc5:*:*:*:*:*:*
cpe:2.3:a:nameko:nameko:3.0.0:rc6:*:*:*:*:*:*
cpe:2.3:a:nameko:nameko:3.0.0:rc7:*:*:*:*:*:*
cpe:2.3:a:nameko:nameko:3.0.0:rc8:*:*:*:*:*:*
cpe:2.3:a:nameko:nameko:3.0.0:rc9:*:*:*:*:*:*

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