CVE-2020-20093

MEDIUMNVD 6.56.5—Elevated

6.5

The Facebook Messenger app for iOS 227.0 and prior and Android 228.1.0.10.116 and prior user interface does not properly represent URI messages to the user, which results in URI spoofing via specially crafted messages.

CVSS v3: 6.5
EG Score: 6.5(medium)
EPSS: 87.9%
KEV: Not listed

Published

March 23, 2022

Last Modified

November 21, 2024

References (4)

cve@mitrehttp://packetstormsecurity.com/files/166448/RTLO-Injection-URI-Spoofing.html
cve@mitrehttps://github.com/zadewg/RIUS
af854a3a-2127-422b-91ae-364da2661108http://packetstormsecurity.com/files/166448/RTLO-Injection-URI-Spoofing.html
af854a3a-2127-422b-91ae-364da2661108https://github.com/zadewg/RIUS

Data Freshness Timeline

(refreshed 10× in last 7d / 20× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

2026-06-08 14:15 UTCEPSS rescore
2026-06-08 14:15 UTCEPSS rescore
2026-06-06 13:45 UTCEPSS rescore
2026-06-06 13:45 UTCEPSS rescore
2026-06-05 22:45 UTCEPSS rescore
2026-06-05 22:45 UTCEPSS rescore
2026-06-05 06:08 UTCEPSS rescore
2026-06-05 06:08 UTCEPSS rescore
2026-06-04 13:10 UTCEPSS rescore
2026-06-04 13:10 UTCEPSS rescore
2026-06-02 20:11 UTCEPSS rescore
2026-06-02 20:11 UTCEPSS rescore
2026-06-01 13:50 UTCEPSS rescore
2026-06-01 13:50 UTCEPSS rescore
2026-05-31 22:29 UTCEPSS rescore
2026-05-31 22:29 UTCEPSS rescore
2026-05-31 00:15 UTCEPSS rescore
2026-05-31 00:15 UTCEPSS rescore
2026-05-29 13:42 UTCEPSS rescore
2026-05-28 13:43 UTCEPSS rescore

Publicly available exploits

(1 reference)

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

GitHub PoCzadewg/RIUS
First seen Aug 15, 2019
CVE-2020-20093; 20094; 20095; 20096, 2022-28345 RTLO Injection URI Spoofing
Open source ↗

Frequently asked(5)

What is CVE-2020-20093?

CVE-2020-20093 is a medium vulnerability published on March 23, 2022. The Facebook Messenger app for iOS 227.0 and prior and Android 228.1.0.10.116 and prior user interface does not properly represent URI messages to the user, which results in URI spoofing via specially crafted messages.

When was CVE-2020-20093 disclosed?

CVE-2020-20093 was first published in the National Vulnerability Database on March 23, 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-2020-20093 actively exploited?

CVE-2020-20093 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 87.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2020-20093?

CVE-2020-20093 has a CVSS v3 base score of 6.5 (NVD).

How do I remediate CVE-2020-20093?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-20093, 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.

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CVE-2020-20093

📅 Published

🔄 Last Modified

🔗 References (4)