How severe is CVE-2020-29591?

CVE-2020-29591 has a CVSS 3.x base score of 9.8, 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 high.

Is CVE-2020-29591 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-29591?

CVE-2020-29591 primarily affects Docker Registry. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-29591?

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.

When was CVE-2020-29591 published?

CVE-2020-29591 was published on 2020-12-11 and last updated on 2026-06-17.

CVE-2020-29591

CVE-2020-29591 is a critical-severity vulnerability in Docker Registry with a CVSS 3.x base score of 9.8. 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-521.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 3% (84th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-521
Affected product: Docker Registry
Published: 2020-12-11
Last modified: 2026-06-17

Description

Versions of the Official registry Docker images through 2.7.0 contain a blank password for the root user. Systems deployed using affected versions of the registry container may allow a remote attacker to achieve root access with a blank password.

Frequently asked questions

What is CVE-2020-29591?: Versions of the Official registry Docker images through 2.7.0 contain a blank password for the root user. Systems deployed using affected versions of the registry container may allow a remote attacker to achieve root access with a blank password.
How severe is CVE-2020-29591?: CVE-2020-29591 has a CVSS 3.x base score of 9.8, 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 high.
Is CVE-2020-29591 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-29591?: CVE-2020-29591 primarily affects Docker Registry. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-29591?: 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.
When was CVE-2020-29591 published?: CVE-2020-29591 was published on 2020-12-11 and last updated on 2026-06-17.

References

Affected products (10)

cpe:2.3:a:docker:registry:2.5:*:*:*:*:*:*:*
cpe:2.3:a:docker:registry:2.5.0:*:*:*:*:*:*:*
cpe:2.3:a:docker:registry:2.5.0:rc:*:*:*:*:*:*
cpe:2.3:a:docker:registry:2.5.0:rc2:*:*:*:*:*:*
cpe:2.3:a:docker:registry:2.5.1:*:*:*:*:*:*:*
cpe:2.3:a:docker:registry:2.6.0:*:*:*:*:*:*:*
cpe:2.3:a:docker:registry:2.6.0:rc2:*:*:*:*:*:*
cpe:2.3:a:docker:registry:2.6.1:*:*:*:*:*:*:*
cpe:2.3:a:docker:registry:2.6.1:rc2:*:*:*:*:*:*
cpe:2.3:a:docker:registry:2.7.0:*:*:*:*:*:*:*

Other CWE-521 (Weak Password Requirements) vulnerabilities

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CVE-2025-12552 — Critical (CVSS 9.8): Insufficient Password Policy.This issue affects BLU-IC2: through 1.19.5; BLU-IC4: through 1.19.5.
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Browse all CWE-521 (Weak Password Requirements) vulnerabilities →