How severe is CVE-2020-4579?

CVE-2020-4579 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2020-4579 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-4579?

CVE-2020-4579 affects Ibm Datapower Gateway. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-4579?

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-2020-4579 published?

CVE-2020-4579 was published on 2020-09-21 and last updated on 2026-06-17.

CVE-2020-4579

CVE-2020-4579 is a high-severity vulnerability in Ibm Datapower Gateway with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 2% (81st percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Ibm Datapower Gateway
Published: 2020-09-21
Last modified: 2026-06-17

Description

IBM DataPower Gateway 2018.4.1.0 through 2018.4.1.12 could allow a remote attacker to cause a denial of service by sending a specially crafted HTTP/2 request with invalid characters. IBM X-Force ID: 184438.

Frequently asked questions

What is CVE-2020-4579?: IBM DataPower Gateway 2018.4.1.0 through 2018.4.1.12 could allow a remote attacker to cause a denial of service by sending a specially crafted HTTP/2 request with invalid characters. IBM X-Force ID: 184438.
How severe is CVE-2020-4579?: CVE-2020-4579 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2020-4579 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-4579?: CVE-2020-4579 affects Ibm Datapower Gateway. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-4579?: 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-2020-4579 published?: CVE-2020-4579 was published on 2020-09-21 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:ibm:datapower_gateway:*:*:*:*:*:*:*:*

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