CVE-2025-8876: N-able N-Central Command Injection Vulnerability

Should you act?

Exploited: patch now if you run it

CISA has confirmed exploitation in the wild. This signal is computed from CISA KEV, EPSS and CVSS data; it is not an editorial verdict.

• Yes, if you run N-able N-Central. CISA added this CVE to its Known Exploited Vulnerabilities catalog on 2025-08-13, which means there is reliable evidence of exploitation in the wild. US federal agencies must remediate by 2025-08-20; treat that as the outer limit, not the target.
• EPSS 3.4%, percentile 89: FIRST’s model estimates a 3.4% chance of exploitation activity in the next 30 days, higher than 89% of all scored CVEs (elevated). EPSS is a probability, not a verdict.
• Needs an account (low (any account)). Exposure depends on who can log in.

What it is

Improper Input Validation vulnerability in N-able N-central allows OS Command Injection.This issue affects N-central: before 2025.3.1.

CISA’s summary

N-able N-Central contains a command injection vulnerability via improper sanitization of user input.

Weakness type: CWE-20.

Product: N-able N-Central · Assigned by: N-able · Published: 2025-08-14

Affected and fixed versions

Severity scores

• Attack vector: network (remotely reachable)
• Attack complexity: low
• Attack requirements: none
• Privileges required: low (any account)
• User interaction: none

CVSS measures how bad a flaw is if exploited, not how likely exploitation is. Read it next to the exploitation data below.

Exploitation and urgency

• CISA KEV: added 2025-08-13; federal due date 2025-08-20. Known ransomware use: Unknown.
• CISA required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
• CISA SSVC assessment: exploitation active, automatable no, technical impact total.
• FIRST EPSS (model of 2026-10-21): 3.45% probability of exploitation activity in the next 30 days; percentile 89.

Timeline

• 2025-08-13 — Added to CISA’s Known Exploited Vulnerabilities catalog
• 2025-08-14 — CVE record published by N-able
• 2025-08-20 — CISA remediation deadline for US federal agencies
• 2025-10-21 — CVE record last updated

Sources and references

Original sources first. Version and fix details should always be confirmed against the vendor or project advisory.

Vendor and project advisories, patches

1. Listed in CISA KEV notes (status.n-able.com) status.n-able.com

Vulnerability records

1. CVE.org record CVE-2025-8876 cve.org
2. NVD entry CVE-2025-8876 nvd.nist.gov

Government

1. CISA Known Exploited Vulnerabilities catalog entry cisa.gov

All exploited N-able vulnerabilities · Today’s Security Digest