CVE-2020-8644

Name: CVE-2020-8644
Creator: NVD / NIST
Published: 2020-02-05T22:15:11.003+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10Actively ExploitedEPSS 86.69%

Last modified Jun 17, 2026

CVE-2020-8644 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. PlaySMS before 1.4.3 does not sanitize inputs from a malicious string.. CISA has confirmed active exploitation in the wild. EPSS estimates a 86.69% chance of exploitation in the next 30 days.

Description

PlaySMS before 1.4.3 does not sanitize inputs from a malicious string.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

86.69%

99.7th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by May 3, 2022.

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Playsms	Playsms	< 1.4.3

References

http://packetstormsecurity.com/files/157106/PlaySMS-index.php-Unauthenticated-Template-Injection-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
https://forum.playsms.org/t/playsms-1-4-3-has-been-released/2704Broken Link, Release Notes, Vendor Advisory
https://playsms.org/2020/02/05/playsms-1-4-3-has-been-released/Vendor Advisory
https://research.nccgroup.com/2020/02/11/technical-advisory-playsms-pre-authentication-remote-code-execution-cve-2020-8644/Exploit
http://packetstormsecurity.com/files/157106/PlaySMS-index.php-Unauthenticated-Template-Injection-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
https://forum.playsms.org/t/playsms-1-4-3-has-been-released/2704Broken Link, Release Notes, Vendor Advisory
https://playsms.org/2020/02/05/playsms-1-4-3-has-been-released/Vendor Advisory
https://research.nccgroup.com/2020/02/11/technical-advisory-playsms-pre-authentication-remote-code-execution-cve-2020-8644/Exploit
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-8644US Government Resource

Timeline

Published: Feb 5, 2020
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2020-8644?

PlaySMS before 1.4.3 does not sanitize inputs from a malicious string.

How severe is CVE-2020-8644?

CVE-2020-8644 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 86.69% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.

How do I fix CVE-2020-8644?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-8644?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST