How severe is CVE-2021-29725?

CVE-2021-29725 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2021-29725 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-29725?

CVE-2021-29725 primarily affects Ibm Secure External Authentication Server. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-29725?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-29725 published?

CVE-2021-29725 was published on 2021-07-15 and last updated on 2026-06-17.

CVE-2021-29725

CVE-2021-29725 is a high-severity vulnerability in Ibm Secure External Authentication Server with a CVSS 3.x base score of 7.5. 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-770.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 3% (85th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-770
Affected product: Ibm Secure External Authentication Server
Published: 2021-07-15
Last modified: 2026-06-17

Description

IBM Secure External Authentication Server 2.4.3.2, 6.0.1, 6.0.2 and IBM Secure Proxy 3.4.3.2, 6.0.1, 6.0.2 could allow a remote user to consume resources causing a denial of service due to a resource leak.

Frequently asked questions

What is CVE-2021-29725?: IBM Secure External Authentication Server 2.4.3.2, 6.0.1, 6.0.2 and IBM Secure Proxy 3.4.3.2, 6.0.1, 6.0.2 could allow a remote user to consume resources causing a denial of service due to a resource leak.
How severe is CVE-2021-29725?: CVE-2021-29725 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2021-29725 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-29725?: CVE-2021-29725 primarily affects Ibm Secure External Authentication Server. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-29725?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-29725 published?: CVE-2021-29725 was published on 2021-07-15 and last updated on 2026-06-17.

References

Affected products (6)

cpe:2.3:a:ibm:secure_external_authentication_server:2.4.3.2:*:*:*:*:*:*:*
cpe:2.3:a:ibm:secure_external_authentication_server:6.0.1:*:*:*:*:*:*:*
cpe:2.3:a:ibm:secure_external_authentication_server:6.0.2:*:*:*:*:*:*:*
cpe:2.3:a:ibm:sterling_secure_proxy:3.4.3.2:*:*:*:*:*:*:*
cpe:2.3:a:ibm:sterling_secure_proxy:6.0.1:*:*:*:*:*:*:*
cpe:2.3:a:ibm:sterling_secure_proxy:6.0.2:*:*:*:*:*:*:*

More vulnerabilities in Ibm Secure External Authentication Server

CVE-2021-29749 — Medium (CVSS 5.4): IBM Secure External Authentication Server 6.0.2 and IBM Secure Proxy 6.0.2 is vulnerable to server-side request forgery…
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