How severe is CVE-2026-20189?

CVE-2026-20189 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2026-20189 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-20189?

CVE-2026-20189 primarily affects Cisco Prime Infrastructure. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-20189?

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

Does CVE-2026-20189 have an EU (EUVD) identifier?

Yes. CVE-2026-20189 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-27861.

When was CVE-2026-20189 published?

CVE-2026-20189 was published on 2026-05-06 and last updated on 2026-06-29.

CVE-2026-20189

CVE-2026-20189 is a medium-severity vulnerability in Cisco Prime Infrastructure with a CVSS 3.x base score of 4.3. 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-862.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
EPSS exploit prediction: 0% (11th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-27861
Weakness: CWE-862
Affected product: Cisco Prime Infrastructure
Published: 2026-05-06
Last modified: 2026-06-29

Description

A vulnerability in the log file download functionality of Cisco Prime Infrastructure could allow an authenticated, remote attacker to download arbitrary log files from the server. This vulnerability is due to insufficient authorization checks on the download service API. An attacker could exploit this vulnerability by submitting a crafted URL request to an affected device. A successful exploit could allow the attacker to download sensitive log files that they would otherwise not have authorization to access. To exploit this vulnerability, the attacker must have valid credentials to access the web-based management interface of the affected device.

Frequently asked questions

What is CVE-2026-20189?: A vulnerability in the log file download functionality of Cisco Prime Infrastructure could allow an authenticated, remote attacker to download arbitrary log files from the server. This vulnerability is due to insufficient authorization checks on the download service API. An attacker could exploit this vulnerability by submitting a crafted URL request to an affected device. A successful exploit could allow the attacker to download sensitive log files that they would otherwise not have authorization to access. To exploit this vulnerability, the attacker must have valid credentials to access the web-based management interface of the affected device.
How severe is CVE-2026-20189?: CVE-2026-20189 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2026-20189 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-20189?: CVE-2026-20189 primarily affects Cisco Prime Infrastructure. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-20189?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-20189 have an EU (EUVD) identifier?: Yes. CVE-2026-20189 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-27861.
When was CVE-2026-20189 published?: CVE-2026-20189 was published on 2026-05-06 and last updated on 2026-06-29.

References

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-pi-unauth-infodiscl-LFnLgmey

Affected products (4)

cpe:2.3:a:cisco:prime_infrastructure:*:*:*:*:*:*:*:*
cpe:2.3:a:cisco:prime_infrastructure:3.10.6:-:*:*:*:*:*:*
cpe:2.3:a:cisco:prime_infrastructure:3.10.6:security_update_01:*:*:*:*:*:*
cpe:2.3:a:cisco:prime_infrastructure:3.10.6:security_update_02:*:*:*:*:*:*

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