CVE-2026-48686

unknowncovered by 1 sourcefirst seen 2026-07-02

Multiple security issues have been discovered in FastNetMon, a fast DDoS analyzer: TLS connections were insufficently validated and malformed Netflow/sFlow traffic could result in denial of service. https://security-tracker.debian.org/tracker/DSA-6375-1

CSIRTS triage

What: Multiple security issues could result in denial of service due to insufficient validation of TLS connections and malformed traffic.
Who is affected: Deployments of FastNetMon.
Urgency: Remediation is important as these vulnerabilities could disrupt service availability.
Action: Apply the latest security update for FastNetMon.

AI-assisted analysis generated from the source advisory — verify against the original.

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Exploitation outlook

Low exploitation risk0.56% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 43% of all EPSS-scored CVEs.

Advisory coverage (1)

unknownDSA-6375-1 fastnetmon - security updatedebian · 2026-07-02

External references

NVD record for CVE-2026-48686

CVE.org record

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