CVE-2020-11024

Stream-key theft via PIN-bearing pairing salt

Published Apr 29, 2020 · Updated Aug 4, 2024

Man-in-the-middle exposure in Moonlight iOS/tvOS before 4.0.1 allows attackers to steal stream encryption keys during pairing. PairManager.m sends a random salt concatenated with the client PIN in the pairing request instead of reserving those combined bytes for AES-key derivation. Exploitation requires temporary control of the pairing path and victim interaction during the one-time pairing window; a fraudulent pinned certificate can keep later streams traversing the attacker's proxy.

CVSS severity6.1
Medium
EPSS probability0.80%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Man-in-the-middle exposure in Moonlight iOS/tvOS before 4.0.1 allows attackers to steal stream encryption keys during pairing. PairManager.m sends a random salt concatenated with the client PIN in the pairing request instead of reserving those combined bytes for AES-key derivation. Exploitation requires temporary control of the pairing path and victim interaction during the one-time pairing window; a fraudulent pinned certificate can keep later streams traversing the attacker's proxy.

The record

CVE
CVE-2020-11024
Published
Apr 29, 2020
Updated
Aug 4, 2024
Vendor
Moonlight Game Streaming Project
Product
Moonlight
Classifications
CWE-200, CWE-300, T1557
Attack vector
adjacent
Privileges
Unavailable

Timeline

How it unfolded

  1. Apr 29, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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=< 4.0.1

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesUnavailable in this record.

What is affected?

Moonlight Game Streaming Project · Moonlightversion=< 4.0.1

Published CVSS scores

4.9NIST NVDAV:N/AC:M/Au:S/C:P/I:P/A:N
6.1GitHub, Inc.CVSS:3.1/AV:P/AC:H/PR:L/UI:R/S:C/C:H/I:L/A:L
8.2NIST NVDCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

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

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
CWE-300Channel Accessible by Non-Endpoint
T1557Adversary-in-the-Middle

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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