How severe is CVE-2021-29827?

CVE-2021-29827 has a CVSS 3.x base score of 5.2, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-29827 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (18th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-29827?

CVE-2021-29827 affects Ibm Infosphere Information Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-29827?

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

Does CVE-2021-29827 have an EU (EUVD) identifier?

Yes. CVE-2021-29827 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2021-16301.

When was CVE-2021-29827 published?

CVE-2021-29827 was published on 2024-12-19 and last updated on 2026-06-17.

CVE-2021-29827

CVE-2021-29827 is a medium-severity vulnerability in Ibm Infosphere Information Server with a CVSS 3.x base score of 5.2. 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 5.2)
EPSS exploit prediction: 0% (18th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2021-16301
Weakness: CWE-1021
Affected product: Ibm Infosphere Information Server
Published: 2024-12-19
Last modified: 2026-06-17

Description

IBM InfoSphere Information Server 11.7 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.

Frequently asked questions

What is CVE-2021-29827?: IBM InfoSphere Information Server 11.7 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.
How severe is CVE-2021-29827?: CVE-2021-29827 has a CVSS 3.x base score of 5.2, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-29827 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (18th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-29827?: CVE-2021-29827 affects Ibm Infosphere Information Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-29827?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2021-29827 have an EU (EUVD) identifier?: Yes. CVE-2021-29827 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2021-16301.
When was CVE-2021-29827 published?: CVE-2021-29827 was published on 2024-12-19 and last updated on 2026-06-17.

References

https://www.ibm.com/support/pages/security-bulletin-ibm-infosphere-information-server-vulnerable-cross-frame-scripting-exploit-cve-2021-29827

Affected products (1)

cpe:2.3:a:ibm:infosphere_information_server:11.7:*:*:*:*:*:*:*

More vulnerabilities in Ibm Infosphere Information Server

CVE-2009-4240 — Critical (CVSS 10.0): Multiple buffer overflows in unspecified setuid executables in the DataStage subsystem in IBM InfoSphere Information…
CVE-2022-40752 — Critical (CVSS 9.8): IBM InfoSphere DataStage 11.7 is vulnerable to a command injection vulnerability due to improper neutralization of…
CVE-2022-22425 — Critical (CVSS 9.8): "IBM InfoSphere Information Server 11.7 is potentially vulnerable to CSV Injection. A remote attacker could execute…
CVE-2022-31768 — Critical (CVSS 9.8): IBM InfoSphere Information Server 11.7 is vulnerable to SQL injection. A remote attacker could send specially crafted…
CVE-2020-27583 — Critical (CVSS 9.8): IBM InfoSphere Information Server 8.5.0.0 is affected by deserialization of untrusted data which could allow remote…
CVE-2012-0204 — Critical (CVSS 9.3): Untrusted search path vulnerability in InfoSphere Import Export Manager 8.1 through 9.1 in InfoSphere Information…

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