How severe is CVE-2021-20524?

CVE-2021-20524 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-20524 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-20524?

CVE-2021-20524 affects Ibm Security Verify Access. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-20524?

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

When was CVE-2021-20524 published?

CVE-2021-20524 was published on 2021-07-15 and last updated on 2026-06-17.

CVE-2021-20524

CVE-2021-20524 is a medium-severity vulnerability in Ibm Security Verify Access with a CVSS 3.x base score of 4.8. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 4.8)
CVSS v2: 3.5
EPSS exploit prediction: 0% (38th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Ibm Security Verify Access
Published: 2021-07-15
Last modified: 2026-06-17

Description

IBM Security Verify Access Docker 10.0.0 is vulnerable to cross-site scripting. This vulnerability allows users to embed arbitrary JavaScript code in the Web UI thus altering the intended functionality potentially leading to credentials disclosure within a trusted session. IBM X-Force ID: 198661.

Frequently asked questions

What is CVE-2021-20524?: IBM Security Verify Access Docker 10.0.0 is vulnerable to cross-site scripting. This vulnerability allows users to embed arbitrary JavaScript code in the Web UI thus altering the intended functionality potentially leading to credentials disclosure within a trusted session. IBM X-Force ID: 198661.
How severe is CVE-2021-20524?: CVE-2021-20524 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-20524 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-20524?: CVE-2021-20524 affects Ibm Security Verify Access. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-20524?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-20524 published?: CVE-2021-20524 was published on 2021-07-15 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:ibm:security_verify_access:10.0.0:*:*:*:*:*:*:*

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