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No exploitation reportedFix available

CVE-2020-28589

No exploitation reported by the sources we read.

  • Published2021-08-11
  • WeaknessCWE-129

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2021-08-1113:15CVE publishedNVD

Versions per branch

NVD
Tinyobjloader project tinyobjloader
BranchAffectedFixed in
2.0= 2.0no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • tinyobjloaderUbuntu:26.10all versions · no fixed version listed
  • tinyobjloaderUbuntu:26.04:LTSall versions · no fixed version listed
  • tinyobjloaderUbuntu:25.10all versions · no fixed version listed
  • tinyobjloaderUbuntu:24.04:LTSall versions · no fixed version listed
  • tinyobjloaderUbuntu:22.04:LTSall versions · no fixed version listed
  • tinyobjloaderDebian:14all versions · fixed in 2.0.0~rc10+dfsg-2
  • tinyobjloaderDebian:13all versions · fixed in 2.0.0~rc10+dfsg-2
  • tinyobjloaderDebian:12all versions · fixed in 2.0.0~rc10+dfsg-2

Vendor advisories

  • CVE-2020-28589 Red Hat Product Security

    tinyobjloader: An improper array index validation could lead to code execution.

Full record on NVD

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • NVDCVSS 3.18.8read 2026-10-23
  • CNACVSS 3.09.6known since 2026-10-23
  • NVDCVSS 2.06.8read 2026-10-23
  • CNAweakness (CWE)CWE-129known since 2026-10-23
  • NVDweakness (CWE)CWE-129read 2026-10-23
  • FIRST EPSSEPSS score1.9 %2026-11-08
  • OSVaffected packages—
  • GitHub Advisoriesadvisory—

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published
2021-08-11
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-fhwq-38jv-9c62

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.

Is CVE-2020-28589 actively exploited?

Active exploitation of CVE-2020-28589 has not been confirmed. Its EPSS score was 1.9% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-28589?

CVE-2020-28589 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

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