How severe is CVE-2019-1821?

CVE-2019-1821 has a CVSS score of 8.8/10, rated HIGH. Immediate patching is strongly recommended.

Which packages are affected by CVE-2019-1821?

Affected package information for CVE-2019-1821 is not yet fully mapped. Check the official advisory links for details.

How do I fix CVE-2019-1821?

No fixed version has been published for CVE-2019-1821 yet. Monitor the advisory for updates, apply mitigations recommended by the vendor, and use O3 Security to track when a fix becomes available in your stack.

Is CVE-2019-1821 actively exploited in the wild?

Yes. There are 5 known exploit references for CVE-2019-1821, including 2 documented proof-of-concept exploits on Exploit-DB and 2 in-the-wild exploitations observed on GitHub and other sources. Treat this as actively exploitable and prioritize patching immediately. All exploit code should only be run in an isolated sandbox environment for research or authorized testing — never against production systems without explicit written authorization.

What is the EPSS score for CVE-2019-1821?

CVE-2019-1821 has an EPSS (Exploit Prediction Scoring System) score of 94.0%, placing it in the 100th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. A score above 50% indicates significantly elevated exploitation risk — immediate patching is strongly recommended.

What type of vulnerability is CVE-2019-1821?

CVE-2019-1821 is classified as Improper Input Validation (CWE-20). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

Which products and versions are affected by CVE-2019-1821?

CVE-2019-1821 affects cisco evolved programmable network manager; cisco network level service (1 version, e.g. 3.0\(0.0.83b\)); cisco prime infrastructure. Check the affected-products list on this page against your deployed version to confirm exposure.

Is there exploit tooling available for CVE-2019-1821?

A Nuclei detection template exists for CVE-2019-1821, meaning automated scanners can fingerprint it. Public exploit tooling significantly increases real-world risk — prioritize patching and ensure detection coverage. Exploit tooling should only ever be used in isolated, authorized testing environments.

When was CVE-2019-1821 published, and has it been updated?

CVE-2019-1821 was published on May 16, 2019 and was last updated on November 21, 2024. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

CVE-2019-1821

HIGH

A vulnerability in the web-based management interface of Cisco Prime Infrastructure (PI) and Cisco Evolved Programmable Network (EPN) Manager could allow an authenticated, remote attacker…

Published

May 16, 2019

Updated

Nov 21, 2024

Affected

0 pkgs

Patched

None yet

Exploits

5 known

EPSS Exploitation Probability

via FIRST.org ↗

94.0%probability of exploitation in next 30 days

Very High Risk100th percentile0.00%

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

Description

A vulnerability in the web-based management interface of Cisco Prime Infrastructure (PI) and Cisco Evolved Programmable Network (EPN) Manager could allow an authenticated, remote attacker to execute code with root-level privileges on the underlying operating system. This vulnerability exist because the software improperly validates user-supplied input. An attacker could exploit this vulnerability by uploading a malicious file to the administrative web interface. A successful exploit could allow the attacker to execute code with root-level privileges on the underlying operating system.

Affected Products

3 products · 3 configurations

Application

evolved programmable network managercisco

< 3.0.1

range

Application

network level servicecisco

1 version

3.0\(0.0.83b\)

Application

prime infrastructurecisco

< 3.4.1

range

Exploits & PoCs

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

EDB-47016remotelinux✓ Verified

Cisco Prime Infrastructure Health Monitor - TarArchive Directory Traversal (Metasploit)

by Metasploit · Jun 20, 2019

Exploit-DB Source

EDB-47686remotelinux✓ Verified

Cisco Prime Infrastructure Health Monitor HA TarArchive - Directory Traversal / Remote Code Execution

by mr_me · May 17, 2019

Exploit-DB Source

Frequently Asked Questions

O3 Security · Impact-Aware SCA

Is CVE-2019-1821 in your stack?

O3 detects CVE-2019-1821 across dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.

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