Threats / N-able / CVE-2025-8876
CVE-2025-8876
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-08-04
N-able N-Central vulnerability
N-able N-Central contains a command injection vulnerability through improper input sanitization, allowing remote code execution on affected systems.
Verdict
Today item — known-exploited.
Command injection in N-Central enables unauthenticated or low-privileged attackers to execute arbitrary system commands, potentially compromising managed infrastructure and customer endpoints under N-able's management.
CISA KEV Yes · 2025-08-135EPSS 0.03092 (verify live)6CVSS 9.43CISA SSVC Exploitation: active · Automatable: no · Impact: total4
01
Is it exploitable?
— the evidence, ranked above the scoreReported exploitation
7 independent public reports of in-the-wild exploitation are cataloged.Distinct reporting sources (vendor, incident response, government); open them for the underlying claims.
Exploited in the wild
Listed in the CISA Known Exploited Vulnerabilities catalog (added 2025-08-13).
Probability (EPSS)
EPSS 0.03092 — modeled likelihood of exploitation activity.EPSS is a daily-changing model output — open the source for today's value.
Severity / affected
CVSS 9.4 (CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H) · Affected: N-able, N-Central. Confirm exact fixed builds in the vendor advisory.CVSS — CNA-assigned (CVE.org), version 4.0, set at disclosure.
Weakness (CWE)
Mapped to CWE-20 Improper Input Validation.CWE — CNA-assigned (CVE.org); the weakness class drives how the flaw is exploited.
CISA SSVC (triage disposition)
Exploitation: active · Automatable: no · Technical Impact: totalCISA's own stakeholder-specific triage inputs, published in the CVE record (CISA Coordinator role). NOTE: this is CISA's three decision points; the final Act/Attend/Track decision also requires a Mission & Well-being input not published here, so no overall decision is asserted.
Currency of the record
CISA added this to its KEV catalog the same day the CVE record was published.KEV lag = CISA-KEV dateAdded − CVE.org datePublished; a floor on how long the known-exploited flaw sat in the public record before the federal catalog listed it. Severity/weakness here is CNA- or CISA-assigned (current at disclosure), independent of NVD's analysis backlog.
02
Who’s exploiting it?
— attribution turns risk into urgencyAttribution not established
No confirmed (advisory-backed) threat-actor attribution is established for this record. Absence of a named actor is not absence of compromise — see Coverage & confidence.
03
Why it matters
— the attack path, told twice: adversary, then board1
Front door — unauthenticated access narrative 1
Attacker
I craft malicious input containing shell metacharacters to bypass sanitization filters in N-Central.
Business
Attacker gains code execution within the N-Central management platform, accessing sensitive customer data and control interfaces.
2
Keys to the kingdom — privilege/identity takeover narrative 2
Attacker
I execute commands to enumerate the N-Central environment and identify connected managed endpoints.
Business
Attacker maps the customer infrastructure landscape, identifying high-value targets across the managed service provider's client base.
3
Lateral reach — past segmentation narrative 3
Attacker
I leverage N-Central's privileged access to deploy malware or backdoors across customer endpoints.
Business
N-able's customers experience widespread compromise of their IT infrastructure, eroding trust and triggering incident response costs.
04
What to do
— defensible action- Remediate per the vendor advisory — confirm the fixed build for your version and verify exposure.1
Say it to the boardA vulnerability with this evidence profile is a defensible budget line, not a backlog ticket — fund the change against the proof above.
05