Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-7701— Telegram Desktop Bot API url_auth_box.cpp RequestButton null pointer dereference

Quick assessment

Affected
Telegram Desktop
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Telegram Desktop是Telegram开源的一款即时通信移动应用程序的桌面版。 Telegram Desktop 6.7.5及之前版本存在安全漏洞，该漏洞源于组件Bot API中文件Telegram/SourceFiles/boxes/url_auth_box.cpp的函数RequestButton对参数login_url的操作，可能导致空指针取消引用。

CVSS 4.3 · Medium EPSS 0.51% · P41

Affected Version Matrix 7

VendorProduct Version RangeStatus
Telegram Desktop 6.7.0 affected
6.7.1 affected
6.7.2 affected
6.7.3 affected
6.7.4 affected
6.7.5 affected
6.7.6 unaffected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-7701

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Telegram Desktop Bot API url_auth_box.cpp RequestButton null pointer dereference
Source: CVE Program / CVE List V5
Vulnerability 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."
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
空指针解引用
Source: CVE Program / CVE List V5
Vulnerability Title
Telegram Desktop 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Telegram Desktop是Telegram开源的一款即时通信移动应用程序的桌面版。 Telegram Desktop 6.7.5及之前版本存在安全漏洞，该漏洞源于组件Bot API中文件Telegram/SourceFiles/boxes/url_auth_box.cpp的函数RequestButton对参数login_url的操作，可能导致空指针取消引用。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Telegram Desktop 6.7.0 cpe:2.3:a:telegram:desktop:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-7701

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-7701

请登录查看更多情报信息。

Other References for CVE-2026-7701 (1)

IV. Related Vulnerabilities

Same product: Desktop
Same vendor: Telegram
Same weakness: CWE-476

V. Comments for CVE-2026-7701

No comments yet

Leave a comment