CVE-2021-45428

CRITICALNVD 9.89.8—Elevated

9.8

TLR-2005KSH is affected by an incorrect access control vulnerability. THe PUT method is enabled so an attacker can upload arbitrary files including HTML and CGI formats.

CVSS v3: 9.8
EG Score: 9.8(high)
EPSS: 99.8%
KEV: Not listed

Published

January 3, 2022

Last Modified

November 21, 2024

References (4)

cve@mitrehttp://packetstormsecurity.com/files/167101/TLR-2005KSH-Arbitrary-File-Upload.html
cve@mitrehttps://drive.google.com/file/d/1wM1SPOfB9mH2SES7cAmlysuI9fOpFB3F/view?usp=sharing
af854a3a-2127-422b-91ae-364da2661108http://packetstormsecurity.com/files/167101/TLR-2005KSH-Arbitrary-File-Upload.html
af854a3a-2127-422b-91ae-364da2661108https://drive.google.com/file/d/1wM1SPOfB9mH2SES7cAmlysuI9fOpFB3F/view?usp=sharing

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-639Authorization Bypass Through User-Controlled Key (IDOR)

Data Freshness Timeline

(refreshed 1× in last 7d / 8× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-29 13:42 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 05:25 UTCEG score recompute
2026-05-26 05:25 UTCGHSA enrichment

Publicly available exploits

(2 references)

Working exploit code is in the public domain (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

Exploit-DBEDB-50931
First seen May 11, 2022
TLR-2005KSH - Arbitrary File Upload
Open source ↗
Nucleihttp/cves/2021/CVE-2021-45428.yaml
First seen Jan 1, 2021
Telesquare TLR-2005KSH 1.0.0 - Arbitrary File Upload
Open source ↗

Frequently asked(5)

What is CVE-2021-45428?

CVE-2021-45428 is a critical vulnerability published on January 3, 2022. TLR-2005KSH is affected by an incorrect access control vulnerability. THe PUT method is enabled so an attacker can upload arbitrary files including HTML and CGI formats.

When was CVE-2021-45428 disclosed?

CVE-2021-45428 was first published in the National Vulnerability Database on January 3, 2022, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2021-45428 actively exploited?

CVE-2021-45428 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 99.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-45428?

CVE-2021-45428 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2021-45428?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-45428, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2021-45428

📅 Published

🔄 Last Modified

🔗 References (4)

Weakness Classification(1)

Data Freshness Timeline

Publicly available exploits

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2021-45428?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (4)

Frequently asked(5)

Related CVEs(same CWE)