How severe is CVE-2020-28589?

CVE-2020-28589 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-28589 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-28589?

CVE-2020-28589 affects Tinyobjloader Project Tinyobjloader. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-28589?

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-2020-28589 published?

CVE-2020-28589 was published on 2021-08-11 and last updated on 2026-06-17.

CVE-2020-28589

CVE-2020-28589 is a high-severity vulnerability in Tinyobjloader Project Tinyobjloader with a CVSS 3.x base score of 8.8. 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-129.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.8
EPSS exploit prediction: 2% (77th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-129
Affected product: Tinyobjloader Project Tinyobjloader
Published: 2021-08-11
Last modified: 2026-06-17

Description

An improper array index validation vulnerability exists in the LoadObj functionality of tinyobjloader v2.0-rc1 and tinyobjloader development commit 79d4421. A specially crafted file could lead to code execution. An attacker can provide a malicious file to trigger this vulnerability.

Frequently asked questions

What is CVE-2020-28589?: An improper array index validation vulnerability exists in the LoadObj functionality of tinyobjloader v2.0-rc1 and tinyobjloader development commit 79d4421. A specially crafted file could lead to code execution. An attacker can provide a malicious file to trigger this vulnerability.
How severe is CVE-2020-28589?: CVE-2020-28589 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-28589 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-28589?: CVE-2020-28589 affects Tinyobjloader Project Tinyobjloader. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-28589?: 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-2020-28589 published?: CVE-2020-28589 was published on 2021-08-11 and last updated on 2026-06-17.

References

https://talosintelligence.com/vulnerability_reports/TALOS-2020-1212

Affected products (1)

cpe:2.3:a:tinyobjloader_project:tinyobjloader:2.0:rc1:*:*:*:*:*:*

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