How severe is CVE-2021-27653?

CVE-2021-27653 has a CVSS 3.x base score of 6.6, rated medium severity. It is exploitable over network with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-27653 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-27653?

CVE-2021-27653 affects Pega Infinity. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-27653?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-27653 published?

CVE-2021-27653 was published on 2021-04-01 and last updated on 2026-06-17.

CVE-2021-27653

CVE-2021-27653 is a medium-severity vulnerability in Pega Infinity with a CVSS 3.x base score of 6.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-284.

Key facts

Severity: Medium (CVSS 3.x base score 6.6)
CVSS v2: 4.0
EPSS exploit prediction: 1% (63rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-284
Affected product: Pega Infinity
Published: 2021-04-01
Last modified: 2026-06-17

Description

Misconfiguration of the Pega Chat Access Group portal in Pega platform 7.4.0 - 8.5.x could lead to unintended data exposure.

Frequently asked questions

What is CVE-2021-27653?: Misconfiguration of the Pega Chat Access Group portal in Pega platform 7.4.0 - 8.5.x could lead to unintended data exposure.
How severe is CVE-2021-27653?: CVE-2021-27653 has a CVSS 3.x base score of 6.6, rated medium severity. It is exploitable over network with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-27653 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-27653?: CVE-2021-27653 affects Pega Infinity. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-27653?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-27653 published?: CVE-2021-27653 was published on 2021-04-01 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:pega:infinity:*:*:*:*:*:*:*:*

More vulnerabilities in Pega Infinity

CVE-2022-24083 — Critical (CVSS 9.8): Password authentication bypass vulnerability for local accounts can be used to bypass local authentication checks.
CVE-2022-24082 — Critical (CVSS 9.8): If an on-premise installation of the Pega Platform is configured with the port for the JMX interface exposed to the…
CVE-2021-27651 — Critical (CVSS 9.8): In versions 8.2.1 through 8.5.2 of Pega Infinity, the password reset functionality for local accounts can be used to…
CVE-2024-10094 — Critical (CVSS 9.1): Pega Platform versions 6.x to Infinity 24.1.1 are affected by an issue with Improper Control of Generation of Code
CVE-2021-27654 — High (CVSS 7.8): Forgotten password reset functionality for local accounts can be used to bypass local authentication checks.
CVE-2024-10716 — Medium (CVSS 5.9): Pega Platform versions 8.1 to Infinity 24.2.0 are affected by an XSS issue with search.

All CVEs affecting Pega Infinity →

Other CWE-284 (Improper Access Control) vulnerabilities

CVE-2026-76607 — Critical (CVSS 10.0): Joomla Extension - fabrikar.com - Missing ACL check in download element in Fabrik < 4.7.3 - ???.
CVE-2026-20315 — Critical (CVSS 10.0): As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Secure Workload engineering…
CVE-2026-70921 — Critical (CVSS 10.0): Vulnerability in the Oracle Hyperion Financial Management product of Oracle Hyperion (component: Security). The…
CVE-2026-66803 — Critical (CVSS 10.0): Improper access control in Azure Cosmos DB allows an unauthorized attacker to execute code over a network.
CVE-2026-58630 — Critical (CVSS 10.0): Improper access control in Azure App Service allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-60358 — Critical (CVSS 10.0): Vulnerability in the Oracle Access Manager product of Oracle Fusion Middleware (component: Authentication Engine).…

Browse all CWE-284 (Improper Access Control) vulnerabilities →