How severe is CVE-2020-11598?

CVE-2020-11598 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-11598 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-11598?

CVE-2020-11598 affects Cipplanner Cipace. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-11598?

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

When was CVE-2020-11598 published?

CVE-2020-11598 was published on 2020-04-06 and last updated on 2026-06-17.

CVE-2020-11598

CVE-2020-11598 is a critical-severity vulnerability in Cipplanner Cipace with a CVSS 3.x base score of 9.8. 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-306.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 3% (83rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-306
Affected product: Cipplanner Cipace
Published: 2020-04-06
Last modified: 2026-06-17

Description

An issue was discovered in CIPPlanner CIPAce 9.1 Build 2019092801. Upload.ashx allows remote attackers to execute arbitrary code by uploading and executing an ASHX file.

Frequently asked questions

What is CVE-2020-11598?: An issue was discovered in CIPPlanner CIPAce 9.1 Build 2019092801. Upload.ashx allows remote attackers to execute arbitrary code by uploading and executing an ASHX file.
How severe is CVE-2020-11598?: CVE-2020-11598 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-11598 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-11598?: CVE-2020-11598 affects Cipplanner Cipace. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-11598?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2020-11598 published?: CVE-2020-11598 was published on 2020-04-06 and last updated on 2026-06-17.

References

https://www.criticalstart.com/vulnerabilities-discovered-in-cipace-enterprise-platform/

Affected products (1)

cpe:2.3:a:cipplanner:cipace:*:*:*:*:*:*:*:*

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