CVE-2022-35639Network attack vector

Unauthenticated service hang via prolonged HTTP connections

Published Jul 26, 2022 · Updated Sep 16, 2024

Denial of service in IBM Sterling Partner Engagement Manager 6.1, 6.2, and Cloud 22.2 allows remote attackers to hang the server. The HTTP service fails to limit connection duration, so Slowloris clients keep connections open until the server becomes unresponsive. The exposed HTTP service is reachable without authentication, and exploitation interrupts availability without reported data disclosure or modification.

CVSS severity7.5
High
EPSS probability0.96%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in IBM Sterling Partner Engagement Manager 6.1, 6.2, and Cloud 22.2 allows remote attackers to hang the server. The HTTP service fails to limit connection duration, so Slowloris clients keep connections open until the server becomes unresponsive. The exposed HTTP service is reachable without authentication, and exploitation interrupts availability without reported data disclosure or modification.

The record

CVE
CVE-2022-35639
Published
Jul 26, 2022
Updated
Sep 16, 2024
Vendor
IBM
Product
IBM Sterling Partner Engagement Manager
Classifications
T1499.003
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 26, 2022CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 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=6.1
  2. Affected versionversion=6.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

IBM · IBM Sterling Partner Engagement Managerversion=6.1; version=6.2
IBM · IBM Sterling Partner Engagement Manager on Cloudversion=22.2

Published CVSS scores

7.5IBMCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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

T1499.003Application Exhaustion Flood

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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