CVE-2026-7701

LOW EPSS 31.3%

Published May 3, 20261mo ago · Modified Jun 17, 20261w ago

2.1 CVSS 4.0

Low

Published May 3, 2026 1mo ago

Last Modified Jun 17, 2026 1w ago

Description

A security vulnerability has been detected in Telegram Desktop up to 6.7.5. This vulnerability affects the function RequestButton of the file Telegram/SourceFiles/boxes/url_auth_box.cpp of the component Bot API. The manipulation of the argument login_url leads to null pointer dereference. It is possible to initiate the attack remotely. The exploit has been disclosed publicly and may be used. There is ongoing doubt regarding the real existence of this vulnerability. Upgrading to version 6.7.6 is able to resolve this issue. Upgrading the affected component is recommended. The vendor provides this rationale for the dispute: "[T]he described scenario does not lead to any security issue or vulnerability, and only causes a one-time crash. In the outlined scenario, the targeted user must perform an active action, which doesn't produce any consequences after the app is relaunched."

CVSS Details

Base Score

2.1

Exploitability

—

Impact

—

Vector string

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/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

Attack Vector Network

Attack Complexity Low

Privileges Required None

User Interaction P

Scope X

Threat Intelligence

EPSS Exploit Probability

31.3% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 2

CWE-404

CWE-476 NULL Pointer Dereference Memory Safety

References 4

vuldb.com https://vuldb.com/submit/804341
vuldb.com https://vuldb.com/vuln/360870
vuldb.com https://vuldb.com/vuln/360870/cti
youtube.com https://www.youtube.com/watch?v=xo9Bplsy1K8

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.