CVE-2022-29502Network attack vector

Terminal I/O interception via truncated key comparison

Published May 5, 2022 · Updated Aug 3, 2024

Improper I/O-key validation in SchedMD Slurm 21.08.0 through 21.08.7 allows remote attackers to attach to terminals and intercept process I/O. The io_init_msg_validate function compares the legitimate key against an attacker-supplied key for the supplied key's length without first requiring equal lengths. Network access to the srun client is required; successful attachment exposes terminal input and output without establishing code execution or broader privilege escalation.

CVSS severity9.8
Critical
EPSS probability1.82%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper I/O-key validation in SchedMD Slurm 21.08.0 through 21.08.7 allows remote attackers to attach to terminals and intercept process I/O. The io_init_msg_validate function compares the legitimate key against an attacker-supplied key for the supplied key's length without first requiring equal lengths. Network access to the srun client is required; successful attachment exposes terminal input and output without establishing code execution or broader privilege escalation.

The record

CVE
CVE-2022-29502
Published
May 5, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1056
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 5, 2022CVE 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8UbuntuCVSS:3.1/AV:N/AC:L/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1056Input Capture

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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