How severe is CVE-2020-22429?

CVE-2020-22429 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-22429 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-22429?

CVE-2020-22429 affects Redox-os Redox. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-22429?

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-2020-22429 published?

CVE-2020-22429 was published on 2023-05-03 and last updated on 2026-06-17.

CVE-2020-22429

CVE-2020-22429 is a high-severity vulnerability in Redox-os Redox 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-416.

Key facts

Severity: High (CVSS 3.x base score 7.8)
EPSS exploit prediction: 0% (16th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-416
Affected product: Redox-os Redox
Published: 2023-05-03
Last modified: 2026-06-17

Description

redox-os v0.1.0 was discovered to contain a use-after-free bug via the gethostbyaddr() function at /src/header/netdb/mod.rs.

Frequently asked questions

What is CVE-2020-22429?: redox-os v0.1.0 was discovered to contain a use-after-free bug via the gethostbyaddr() function at /src/header/netdb/mod.rs.
How severe is CVE-2020-22429?: CVE-2020-22429 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-22429 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-22429?: CVE-2020-22429 affects Redox-os Redox. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-22429?: 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-2020-22429 published?: CVE-2020-22429 was published on 2023-05-03 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:redox-os:redox:0.1.0:*:*:*:*:*:*:*

More vulnerabilities in Redox-os Redox

CVE-2025-46158 — Medium (CVSS 6.2): An issue in redoxOS kernel before commit 5d41cd7c allows a local attacker to cause a denial of service via the…
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CVE-2024-57492 — Medium (CVSS 5.5): An issue in redoxOS relibc before commit 98aa4ea5 allows a local attacker to cause a denial of service via the…

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Other CWE-416 (Use After Free) vulnerabilities

CVE-2026-13782 — Critical (CVSS 10.0): Use after free in Browser in Google Chrome prior to 150.0.7871.47 allowed a remote attacker who had compromised the…
CVE-2026-4725 — Critical (CVSS 10.0): Sandbox escape due to use-after-free in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 149…
CVE-2026-4688 — Critical (CVSS 10.0): Sandbox escape due to use-after-free in the Disability Access APIs component. This vulnerability was fixed in Firefox…
CVE-2025-24085 — Critical (CVSS 10.0): A use after free issue was addressed with improved memory management. This issue is fixed in iOS 18.3 and iPadOS 18.3,…
CVE-2024-43102 — Critical (CVSS 10.0): Concurrent removals of certain anonymous shared memory mappings by using the UMTX_SHM_DESTROY sub-request of…
CVE-2021-32495 — Critical (CVSS 10.0): Radare2 has a use-after-free vulnerability in pyc parser's get_none_object function. Attacker can read freed memory…

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