CVE-2024-51774Network attack vector

Man-in-the-middle content substitution via ignored certificate errors

Published Nov 2, 2024 · Updated Nov 6, 2024

Improper certificate validation in qBittorrent before 5.0.1 allows man-in-the-middle attackers to substitute HTTPS downloads. The shared DownloadManager ignored every TLS certificate validation error, so untrusted certificates did not stop downloads. Exploitation requires man-in-the-middle access or DNS spoofing; substituted content can alter RSS or update links, while Windows code execution additionally requires acceptance of the Python-install prompt.

CVSS severity8.1
High
EPSS probability3.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper certificate validation in qBittorrent before 5.0.1 allows man-in-the-middle attackers to substitute HTTPS downloads. The shared DownloadManager ignored every TLS certificate validation error, so untrusted certificates did not stop downloads. Exploitation requires man-in-the-middle access or DNS spoofing; substituted content can alter RSS or update links, while Windows code execution additionally requires acceptance of the Python-install prompt.

The record

CVE
CVE-2024-51774
Published
Nov 2, 2024
Updated
Nov 6, 2024
Vendor
qBittorrent
Product
qBittorrent
Classifications
CWE-295, T1557
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 2, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 6, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <5.0.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

qBittorrent · qBittorrentversion=0 <5.0.1

Published CVSS scores

8.1GitHub Advisory DatabaseCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-295Improper Certificate Validation
T1557Adversary-in-the-Middle

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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