How severe is CVE-2021-29726?

CVE-2021-29726 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2021-29726 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-29726?

CVE-2021-29726 primarily affects Ibm Secure External Authentication Server. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-29726?

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

When was CVE-2021-29726 published?

CVE-2021-29726 was published on 2022-05-17 and last updated on 2026-06-17.

CVE-2021-29726

CVE-2021-29726 is a medium-severity vulnerability in Ibm Secure External Authentication Server with a CVSS 3.x base score of 5.3. 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-295.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
EPSS exploit prediction: 1% (52nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-295
Affected product: Ibm Secure External Authentication Server
Published: 2022-05-17
Last modified: 2026-06-17

Description

IBM Sterling Secure Proxy 6.0.3 and IBM Secure External Authentication Server 6.0.3 does not properly ensure that a certificate is actually associated with the host due to improper validation of certificates. IBM X-Force ID: 201104.

Frequently asked questions

What is CVE-2021-29726?: IBM Sterling Secure Proxy 6.0.3 and IBM Secure External Authentication Server 6.0.3 does not properly ensure that a certificate is actually associated with the host due to improper validation of certificates. IBM X-Force ID: 201104.
How severe is CVE-2021-29726?: CVE-2021-29726 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2021-29726 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-29726?: CVE-2021-29726 primarily affects Ibm Secure External Authentication Server. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-29726?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-29726 published?: CVE-2021-29726 was published on 2022-05-17 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:ibm:secure_external_authentication_server:6.0.3:*:*:*:*:*:*:*
cpe:2.3:a:ibm:sterling_secure_proxy:6.0.3:*:*:*:*:*:*:*

More vulnerabilities in Ibm Secure External Authentication Server

CVE-2021-29725 — High (CVSS 7.5): 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…
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…

All CVEs affecting Ibm Secure External Authentication Server →

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