How severe is CVE-2019-12623?

CVE-2019-12623 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-2019-12623 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-12623?

CVE-2019-12623 affects Cisco Enterprise Network Functions Virtualization Infrastructure. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-12623?

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

When was CVE-2019-12623 published?

CVE-2019-12623 was published on 2019-08-21 and last updated on 2026-06-17.

CVE-2019-12623

CVE-2019-12623 is a medium-severity vulnerability in Cisco Enterprise Network Functions Virtualization 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-538.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
CVSS v2: 4.0
EPSS exploit prediction: 1% (64th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-538
Affected product: Cisco Enterprise Network Functions Virtualization Infrastructure
Published: 2019-08-21
Last modified: 2026-06-17

Description

A vulnerability in the web server functionality of Cisco Enterprise Network Functions Virtualization Infrastructure Software (NFVIS) could allow an authenticated, remote attacker to perform file enumeration on an affected system. The vulnerability is due to the web server responding with different error codes for existing and non-existing files. An attacker could exploit this vulnerability by sending GET requests for different file names. A successful exploit could allow the attacker to enumerate files residing on the system.

Frequently asked questions

What is CVE-2019-12623?: A vulnerability in the web server functionality of Cisco Enterprise Network Functions Virtualization Infrastructure Software (NFVIS) could allow an authenticated, remote attacker to perform file enumeration on an affected system. The vulnerability is due to the web server responding with different error codes for existing and non-existing files. An attacker could exploit this vulnerability by sending GET requests for different file names. A successful exploit could allow the attacker to enumerate files residing on the system.
How severe is CVE-2019-12623?: CVE-2019-12623 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-2019-12623 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-12623?: CVE-2019-12623 affects Cisco Enterprise Network Functions Virtualization Infrastructure. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-12623?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-12623 published?: CVE-2019-12623 was published on 2019-08-21 and last updated on 2026-06-17.

References

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190821-nfv-enumeration

Affected products (1)

cpe:2.3:a:cisco:enterprise_network_functions_virtualization_infrastructure:*:*:*:*:*:*:*:*

Other CWE-538 vulnerabilities

CVE-2016-20024 — Critical (CVSS 9.8): ZKTeco ZKTime.Net 3.0.1.6 contains an insecure file permissions vulnerability that allows unprivileged users to…
CVE-2025-12059 — Critical (CVSS 9.8): Insertion of Sensitive Information into Externally-Accessible File or Directory vulnerability in Logo Software Industry…
CVE-2023-46723 — High (CVSS 8.9): lte-pic32-writer is a writer for PIC32 devices. In versions 0.0.1 and prior, those who use `sendto.txt` are vulnerable…
CVE-2026-49298 — High (CVSS 8.8): A bug in Apache Airflow's KubernetesExecutor caused JWT tokens used by worker pods to authenticate against the…
CVE-2026-21672 — High (CVSS 8.8): A vulnerability allowing local privilege escalation on Windows-based Veeam Backup & Replication servers.
CVE-2023-7062 — High (CVSS 8.8): The Advanced File Manager Shortcodes plugin for WordPress is vulnerable to Directory Traversal in all versions up to,…

Browse all CWE-538 vulnerabilities →