How severe is CVE-2021-20560?

CVE-2021-20560 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-20560 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-20560?

CVE-2021-20560 primarily affects Ibm Sterling Connect Direct User Interface. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-20560?

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

When was CVE-2021-20560 published?

CVE-2021-20560 was published on 2021-07-26 and last updated on 2026-06-17.

CVE-2021-20560

CVE-2021-20560 is a medium-severity vulnerability in Ibm Sterling Connect Direct User Interface with a CVSS 3.x base score of 5.4. 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-1021.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
CVSS v2: 4.9
EPSS exploit prediction: 1% (46th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-1021
Affected product: Ibm Sterling Connect Direct User Interface
Published: 2021-07-26
Last modified: 2026-06-17

Description

IBM Sterling Connect:Direct Browser User Interface 1.4.1.1 and 1.5.0.2 could allow a remote attacker to hijack the clicking action of the victim. By persuading a victim to visit a malicious Web site, a remote attacker could exploit this vulnerability to hijack the victim's click actions and possibly launch further attacks against the victim. IBM X-Force ID: 199229.

Frequently asked questions

What is CVE-2021-20560?: IBM Sterling Connect:Direct Browser User Interface 1.4.1.1 and 1.5.0.2 could allow a remote attacker to hijack the clicking action of the victim. By persuading a victim to visit a malicious Web site, a remote attacker could exploit this vulnerability to hijack the victim's click actions and possibly launch further attacks against the victim. IBM X-Force ID: 199229.
How severe is CVE-2021-20560?: CVE-2021-20560 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-20560 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-20560?: CVE-2021-20560 primarily affects Ibm Sterling Connect Direct User Interface. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-20560?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-20560 published?: CVE-2021-20560 was published on 2021-07-26 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:ibm:sterling_connect_direct_user_interface:1.4.1.1:*:*:*:*:*:*:*
cpe:2.3:a:ibm:sterling_connect_direct_user_interface:1.5.0.2:*:*:*:*:*:*:*

More vulnerabilities in Ibm Sterling Connect Direct User Interface

CVE-2013-0529 — Medium (CVSS 5.0): The Browser in IBM Sterling Connect:Direct 1.4 before 1.4.0.11 and 1.5 through 1.5.0.1 does not set the secure flag for…
CVE-2013-0527 — Low (CVSS 1.9): The Browser in IBM Sterling Connect:Direct 1.4 before 1.4.0.11 and 1.5 through 1.5.0.1 does not close pages upon the…

All CVEs affecting Ibm Sterling Connect Direct User Interface →

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