CVE-2020-35857

CVE-2020-35857 is a high-severity vulnerability in Trust-dns-server Project Trust-dns-server with a CVSS 3.x base score of 7.5. 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-400.

Key facts

Description

An issue was discovered in the trust-dns-server crate before 0.18.1 for Rust. DNS MX and SRV null targets are mishandled, causing stack consumption.

Frequently asked questions

What is CVE-2020-35857?
An issue was discovered in the trust-dns-server crate before 0.18.1 for Rust. DNS MX and SRV null targets are mishandled, causing stack consumption.
How severe is CVE-2020-35857?
CVE-2020-35857 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2020-35857 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-35857?
CVE-2020-35857 affects Trust-dns-server Project Trust-dns-server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-35857?
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-2020-35857 published?
CVE-2020-35857 was published on 2020-12-31 and last updated on 2026-06-17.

References

Affected products (1)

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