How many CVEs does Telegram have?

Telegram has 38 published CVE records since 2017, including 2 in the last two years.

How many Telegram CVEs are in CISA KEV?

None of Telegram's CVEs are currently listed in CISA's Known Exploited Vulnerabilities catalog.

Which Telegram products have the most CVEs?

The Telegram products with the most published CVEs are telegram, Telegram Desktop, telegram messenger, web k alpha, messenger.

What are the most common weakness types in Telegram CVEs?

Telegram's CVEs most often map to these CWE weakness types: CWE-1021 (Improper Restriction of Rendered UI Layers or Frames), CWE-121 (Stack-based Buffer Overflow), CWE-20 (Improper Input Validation), CWE-404 (Improper Resource Shutdown or Release).

Are there public exploits for Telegram vulnerabilities?

Yes — 6 of Telegram's CVEs have a known public exploit.

How many critical Telegram vulnerabilities are there?

Telegram has 2 critical and 9 high-severity CVEs.

What is the average severity of Telegram CVEs?

The average CVSS base score across Telegram's scored CVEs is 6.2.

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38 CVEs

Telegram Vulnerabilities

Name: Telegram vulnerability dataset (CVEs)
Creator: RadicalNotion.AI
License: https://creativecommons.org/licenses/by-nc/4.0/

CVE security advisories and vulnerability history for Telegram.

38

Total CVEs

Published

0

In CISA KEV

Exploited in the wild

6

Public exploits

PoC or exploit code

6.2

Avg CVSS

2017–2026

Overview

Telegram has 38 published CVE records since 2017, of which 0 are in CISA's Known Exploited Vulnerabilities catalog and 6 have a known public exploit. The average CVSS base score across scored CVEs is 6.2.

This page aggregates every publicly disclosed vulnerability (CVE) affecting Telegram products, with severity breakdowns, the most-affected products, the most common weakness types, and the latest disclosures.

Security scorecard

A quick read on Telegram's vulnerability posture, as a share of its 38 published CVEs.

Average CVSS: 6.2
Critical / high: 29%
Actively exploited (KEV): 0%
Public exploit available: 16%
Patch available: 61%

Severity and exploitation

How the CVSS severity of Telegram's CVEs breaks down, plus how many are exploited in the wild or have public exploit code.

Critical2

High9

Medium25

Low2

In CISA’s Known Exploited Vulnerabilities catalog

0

None of Telegram's CVEs are currently listed in CISA's KEV catalog.

Public exploits

6

6 of Telegram's CVEs have a known public exploit available.

Most affected products

The Telegram products with the most published CVEs. Follow any product to browse its versions and vulnerabilities.

Common weakness types

The CWE weakness categories most often found in Telegram CVEs. Follow any weakness for its full explanation.

CNAs that assign these CVEs

The CVE Numbering Authorities that publish Telegram CVE records.

Disclosure activity by year

How many Telegram CVEs were published each year.

2018

6

2019

4

2020

4

2021

16

2022

1

2023

2

2024

1

2026

2

Latest Telegram CVEs

The most recently disclosed vulnerabilities affecting Telegram.

Telegram Desktop Bot API url_auth_box.cpp RequestButton null pointer dereference
CWE-404
Medium · CVSS 5.3
EPSS 0.4%2026-05-03
Telegram Desktop 2.9.2 - Denial of Service (PoC)
CWE-770
Medium · CVSS 4.6
EPSS 0.5%2026-01-15
High vulnerability · 2024-07-23
CWE-20
High · CVSS 7.1
EPSS 1.4%2024-07-23
Medium vulnerability · 2023-06-29
CWE-1021
Medium · CVSS 5.3
EPSS 0.4%2023-06-29
Medium vulnerability · 2023-05-19
CWE-863
Medium · CVSS 5.5
EPSS 0.5%2023-05-19
Medium vulnerability · 2022-12-06
Medium · CVSS 6.1
EPSS 0.4%2022-12-06
Low vulnerability · 2021-10-04
Low · CVSS 3.3
EPSS 0.3%2021-10-04
Critical vulnerability · 2021-09-06
Critical · CVSS 9.8
EPSS 1.1%2021-09-06
Medium vulnerability · 2021-07-27
Medium · CVSS 6.1
EPSS 0.6%2021-07-27
Medium vulnerability · 2021-07-16
Medium · CVSS 5.3
EPSS 1.0%2021-07-16
Medium vulnerability · 2021-05-18
Medium · CVSS 5.5
EPSS 1.3%2021-05-18
Medium vulnerability · 2021-05-18
Medium · CVSS 5.5
EPSS 1.3%2021-05-18

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Frequently asked questions

Common questions about Telegram vulnerabilities.

How many CVEs does Telegram have?: Telegram has 38 published CVE records since 2017, including 2 in the last two years.
How many Telegram CVEs are in CISA KEV?: None of Telegram's CVEs are currently listed in CISA's Known Exploited Vulnerabilities catalog.
Which Telegram products have the most CVEs?: The Telegram products with the most published CVEs are telegram, Telegram Desktop, telegram messenger, web k alpha, messenger.
What are the most common weakness types in Telegram CVEs?: Telegram's CVEs most often map to these CWE weakness types: CWE-1021 (Improper Restriction of Rendered UI Layers or Frames), CWE-121 (Stack-based Buffer Overflow), CWE-20 (Improper Input Validation), CWE-404 (Improper Resource Shutdown or Release).
Are there public exploits for Telegram vulnerabilities?: Yes — 6 of Telegram's CVEs have a known public exploit.
How many critical Telegram vulnerabilities are there?: Telegram has 2 critical and 9 high-severity CVEs.
What is the average severity of Telegram CVEs?: The average CVSS base score across Telegram's scored CVEs is 6.2.

References

Vulnerability data is sourced from the CVE Program; severity, KEV, and exploit signals are aggregated by RadicalNotion.AI.

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