PatchTheCVECVE-2021-40373: playSMS before 1.4.5 allows Arbitrary Code Execution by entering PHP code at the #tabs-information-page of cor
CVE-2021-40373 is a critical-severity flaw (CVSS 9.8) affecting playsms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
playSMS before 1.4.5 allows Arbitrary Code Execution by entering PHP code at the #tabs-information-page of core_main_config, and then executing that code via the index.php?app=main&inc=core_welcome URI.
Why this priority
- Critical severity
- EPSS top 8%: very likely to be exploited
- Public exploit reference
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 9.8 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 4.7% (top 8%) |
| CISA exploited list | No |
| Weakness | CWE-94 |
| Published | 2021-09-10 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2021-40373?
playsms: upgrade to 1.4.5. Exact commands for each OS are on this page.
Is CVE-2021-40373 being exploited?
CVE-2021-40373 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2021-40373 affect?
CVE-2021-40373 affects playsms. Severity is critical (CVSS 9.8). playSMS before 1.4.5 allows Arbitrary Code Execution by entering PHP code at the #tabs-information-page of core_main_config, and then executing that code via the index.php?app=main&inc=core_welcome URI.
How urgent is CVE-2021-40373?
Priority 67/100. Critical severity; EPSS top 8%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action
Software pages
Related CVEs
- CVE-2024-8880 MEDIUM 5.6 DOWNGRADE A vulnerability classified as critical has been found in playSMS 1.4.4/1.4.5/1.4.6/1.4.7
- CVE-2024-6470 LOW 2.7 DOWNGRADE A vulnerability was found in playSMS 1.4.3
- CVE-2024-6469 LOW 2.7 DOWNGRADE A vulnerability was found in playSMS 1.4.3
- CVE-2024-6251 LOW 2.4 DOWNGRADE A vulnerability, which was classified as problematic, was found in playSMS 1.4.3
- CVE-2022-47034 CRITICAL 9.8 UPGRADE A type juggling vulnerability in the component /auth/fn.php of PlaySMS v1.4.5 and earlier allows attackers to