ByteOS Network

NVD Vulnerability Details :

CVE-2021-47827

Awaiting Analysis

Source-disclosure@vulncheck.com

Published At-16 Jan, 2026 | 19:16

Updated At-26 Jan, 2026 | 15:05

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.

Date Added	Due Date	Vulnerability Name	Required Action
	N/A

Metrics

Type	Version	Base score	Base severity	Vector
Secondary	4.0	4.6	MEDIUM	CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Primary	3.1	7.5	HIGH	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Type: Secondary

Version: 4.0

Base score: 4.6

Base severity: MEDIUM

Vector:

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Type: Primary

Version: 3.1

Base score: 7.5

Base severity: HIGH

Vector:

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

Weaknesses

CWE ID	Type	Source
CWE-1284	Primary	disclosure@vulncheck.com

CWE ID: CWE-1284

Type: Primary

Source: disclosure@vulncheck.com

References

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