CVE-2021-27653Public exploitNetwork attack vector

Authenticated data exposure via nonblank Chat portal

Published Apr 1, 2021 · Updated Sep 16, 2024

Improper access control in Pegasystems Pega Infinity 7.4.0 through 8.5.2 allows remote authenticated users to access unintended data. The Pega Chat self-service access group exposes content when its activated portal contains harness or section definitions instead of the required blank portal. Access requires a highly privileged network session, and exposure is limited to data reachable through the misconfigured portal.

CVSS severity6.6
Medium
EPSS probability1.09%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in Pegasystems Pega Infinity 7.4.0 through 8.5.2 allows remote authenticated users to access unintended data. The Pega Chat self-service access group exposes content when its activated portal contains harness or section definitions instead of the required blank portal. Access requires a highly privileged network session, and exposure is limited to data reachable through the misconfigured portal.

The record

CVE
CVE-2021-27653
Published
Apr 1, 2021
Updated
Sep 16, 2024
Vendor
Pegasystems Inc.
Product
Pega Infinity
Classifications
CWE-284, T1190
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Apr 1, 2021CVE 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

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=>=7.4.0, <8.5.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Pegasystems Inc. · Pega Infinityversion=>=7.4.0, <8.5.3

Published CVSS scores

4.0NIST NVDAV:N/AC:L/Au:S/C:P/I:N/A:N
6.6Pegasystems Inc.CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
4.9NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/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)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-284Improper Access Control
T1190Exploit Public-Facing Application

Public exploit references

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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