How severe is CVE-2021-29771?

CVE-2021-29771 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-2021-29771 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-2021-29771?

CVE-2021-29771 affects Ibm Infosphere Information Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-29771?

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

When was CVE-2021-29771 published?

CVE-2021-29771 was published on 2021-11-02 and last updated on 2026-06-17.

CVE-2021-29771

CVE-2021-29771 is a medium-severity vulnerability in Ibm Infosphere Information Server 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
CVSS v2: 3.5
EPSS exploit prediction: 0% (38th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Ibm Infosphere Information Server
Published: 2021-11-02
Last modified: 2026-06-17

Description

IBM InfoSphere Information Server 11.7 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.

Frequently asked questions

What is CVE-2021-29771?: IBM InfoSphere Information Server 11.7 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.
How severe is CVE-2021-29771?: CVE-2021-29771 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-2021-29771 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-2021-29771?: CVE-2021-29771 affects Ibm Infosphere Information Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-29771?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-29771 published?: CVE-2021-29771 was published on 2021-11-02 and last updated on 2026-06-17.

References

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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