What is CVE-2021-47827?

CVE-2021-47827 is a high-severity vulnerability in Webssh For Ios, classified under Improper Validation of Specified Quantity in Input. CVSS score: 7.5/10. Published 2026-01-16.

How severe is CVE-2021-47827?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Webssh For Ios

CVE-2021-47827

WebSSH for iOS 14.16.10 contains a denial of service vulnerability in the mashREPL tool that allows attackers to crash the application by pasting malformed input. Attackers can trigger the vulnerability by copying a 300-character buffer of…

EPSS: 0.004 (32.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Webssh For Ios — versions 14.16.10

Weakness classification (CWE)

CWE-1284 — Improper Validation of Specified Quantity in Input

References

disclosure@vulncheck.com (exploit)
disclosure@vulncheck.com (product)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2021-47827?: CVE-2021-47827 is a high-severity vulnerability in Webssh For Ios, classified under Improper Validation of Specified Quantity in Input. CVSS score: 7.5/10. Published 2026-01-16.
How severe is CVE-2021-47827?: High severity. CVSS v3 base score is 7.5 out of 10.