DSA-6375-1 fastnetmon - security update

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.

Details

Source

Debian Security Advisories (INTL · vendor-psirt · site)

Severity

unknown

Published

2026-07-02

Exploitation

Not in CISA KEV at last sync

Original advisory: https://lists.debian.org/debian-security-announce/2026/msg00286.html

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

• Low exploitation riskCVE-2026-486830.33% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 25% of all scored CVEs.
• Low exploitation riskCVE-2026-486840.26% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 18% of all scored CVEs.
• Low exploitation riskCVE-2026-486850.29% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 21% of all scored CVEs.
• Low exploitation riskCVE-2026-486860.56% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 43% of all scored CVEs.
• Moderate exploitation riskCVE-2026-486871.6% 30-day exploitation probability. Patch within normal cadence, watch for KEV listing. Riskier than 74% of all scored CVEs.
• Low exploitation riskCVE-2026-486880.28% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 20% of all scored CVEs.
• Low exploitation riskCVE-2026-486890.68% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 48% of all scored CVEs.
• Low exploitation riskCVE-2026-486900.12% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 2% of all scored CVEs.
• Low exploitation riskCVE-2026-486910.31% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 23% of all scored CVEs.
• Low exploitation riskCVE-2026-486940.23% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 14% of all scored CVEs.

Referenced CVEs

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