CVE-2021-32794

Unauthorized IPC access via cleared password

Published Jul 26, 2021 · Updated Aug 3, 2024

Improper authentication in JustArchiNET ArchiSteamFarm before 5.1.2.4 allows attackers to access IPC after an authorized update. The POST /Api/ASF handler replaces a stored IPCPassword with its default empty value when the update omits that property instead of preserving the existing secret. An authenticated user must first submit the global configuration update; exposure is normally limited to localhost, but a remotely exposed passwordless IPC interface permits unauthorized access.

CVSS severity6.8
Medium
EPSS probability1.03%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authentication in JustArchiNET ArchiSteamFarm before 5.1.2.4 allows attackers to access IPC after an authorized update. The POST /Api/ASF handler replaces a stored IPCPassword with its default empty value when the update omits that property instead of preserving the existing secret. An authenticated user must first submit the global configuration update; exposure is normally limited to localhost, but a remotely exposed passwordless IPC interface permits unauthorized access.

The record

CVE
CVE-2021-32794
Published
Jul 26, 2021
Updated
Aug 3, 2024
Vendor
JustArchiNET
Product
ArchiSteamFarm
Classifications
CWE-287
Attack vector
adjacent
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 26, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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=< 5.1.2.4

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesauthenticated

What is affected?

JustArchiNET · ArchiSteamFarmversion=< 5.1.2.4

Published CVSS scores

6.8GitHub, Inc.CVSS:3.1/AV:A/AC:H/PR:L/UI:R/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)
Vectoradjacent
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-287Improper Authentication

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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