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 repeated 'A' characters into the mashREPL input field, causing the application to crash.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://apps.apple.com/mx/app/webssh-ssh-client/id497714887
https://www.exploit-db.com/exploits/49883
https://www.vulncheck.com/advisories/webssh-for-ios-mashrepl-denial-of-service

Configurations

No configuration.

History

16 Jan 2026, 19:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-01-16 19:16

Updated : 2026-01-26 15:05

NVD link : CVE-2021-47827

Mitre link : CVE-2021-47827

CVE.ORG link : CVE-2021-47827

JSON object : View

Products Affected

No product.

CWE

CWE-1284

Improper Validation of Specified Quantity in Input

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