How severe is CVE-2020-4305?

CVE-2020-4305 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-4305 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (90th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-4305?

CVE-2020-4305 primarily affects Ibm Infosphere Information Server. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-4305?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2020-4305 published?

CVE-2020-4305 was published on 2020-07-09 and last updated on 2026-06-17.

CVE-2020-4305

CVE-2020-4305 is a high-severity vulnerability in Ibm Infosphere Information Server with a CVSS 3.x base score of 8.8. 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-502.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 9.3
EPSS exploit prediction: 5% (90th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-502
Affected product: Ibm Infosphere Information Server
Published: 2020-07-09
Last modified: 2026-06-17

Description

IBM InfoSphere Information Server 11.3, 11.5, and 11.7 could allow a remote attacker to execute arbitrary code on the system, caused by the deserialization of untrusted data. By persuading a victim to visit a specially crafted Web site, an attacker could exploit this vulnerability to execute arbitrary code on the system. IBM X-Force ID: 176677.

Frequently asked questions

What is CVE-2020-4305?: IBM InfoSphere Information Server 11.3, 11.5, and 11.7 could allow a remote attacker to execute arbitrary code on the system, caused by the deserialization of untrusted data. By persuading a victim to visit a specially crafted Web site, an attacker could exploit this vulnerability to execute arbitrary code on the system. IBM X-Force ID: 176677.
How severe is CVE-2020-4305?: CVE-2020-4305 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-4305 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (90th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-4305?: CVE-2020-4305 primarily affects Ibm Infosphere Information Server. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-4305?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2020-4305 published?: CVE-2020-4305 was published on 2020-07-09 and last updated on 2026-06-17.

References

Affected products (5)

cpe:2.3:a:ibm:infosphere_information_server:*:*:*:*:*:*:*:*
cpe:2.3:a:ibm:infosphere_information_server:11.3.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:infosphere_information_server:11.5.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:infosphere_information_server_on_cloud:*:*:*:*:*:*:*:*
cpe:2.3:a:ibm:infosphere_information_server_on_cloud:11.5.0.0:*:*:*:*:*:*:*

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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