How severe is CVE-2018-20989?

CVE-2018-20989 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-2018-20989 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-20989?

CVE-2018-20989 affects Untrusted Project Untrusted. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-20989?

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-2018-20989 published?

CVE-2018-20989 was published on 2019-08-26 and last updated on 2026-06-17.

CVE-2018-20989

CVE-2018-20989 is a high-severity vulnerability in Untrusted Project Untrusted 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-191.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (69th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-191
Affected product: Untrusted Project Untrusted
Published: 2019-08-26
Last modified: 2026-06-17

Description

An issue was discovered in the untrusted crate before 0.6.2 for Rust. Error handling can trigger an integer underflow and panic.

Frequently asked questions

What is CVE-2018-20989?: An issue was discovered in the untrusted crate before 0.6.2 for Rust. Error handling can trigger an integer underflow and panic.
How severe is CVE-2018-20989?: CVE-2018-20989 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-2018-20989 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-20989?: CVE-2018-20989 affects Untrusted Project Untrusted. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-20989?: 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-2018-20989 published?: CVE-2018-20989 was published on 2019-08-26 and last updated on 2026-06-17.

References

https://rustsec.org/advisories/RUSTSEC-2018-0001.html

Affected products (1)

cpe:2.3:a:untrusted_project:untrusted:*:*:*:*:*:*:*:*

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