[NEW] [high] Linux Kernel: Multiple vulnerabilities

highCVE-2026-64561 CVE-2026-64562 CVE-2026-64563 CVE-2026-64564 CVE-2026-64565

An attacker can exploit multiple vulnerabilities in Linux Kernel to disclose confidential information, manipulate data, or cause a Denial-of-Service condition.

CSIRTS triage

vendor: PJSIP product: pjmedia Denial of service

What: Multiple vulnerabilities in PJSIP pjmedia enabling remote denial-of-service attacks.
Who is affected: Deployments of PJSIP pjmedia vulnerable to remote DoS by anonymous attackers.
Urgency: Patch immediately as denial-of-service vulnerabilities can disrupt critical communication services.
Action: Update PJSIP to a patched version that addresses the pjmedia denial-of-service vulnerabilities.

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

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Details

Source: CERT-Bund (BSI) Security Advisories (DE · national-cert · site)
Severity: high
Published: 2026-08-07
Exploitation: Not in CISA KEV at last sync
Language: Machine-translated to English — verify against the original

Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-2640

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-2026-645610.16% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 5% of all EPSS-scored CVEs.
Low exploitation riskCVE-2026-645620.16% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 5% of all EPSS-scored CVEs.
Low exploitation riskCVE-2026-645630.15% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 5% of all EPSS-scored CVEs.
Low exploitation riskCVE-2026-645640.16% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 5% of all EPSS-scored CVEs.
Low exploitation riskCVE-2026-645650.17% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 7% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-64561	coverage & exploitation status	NVD · CVE.org
CVE-2026-64562	coverage & exploitation status	NVD · CVE.org
CVE-2026-64563	coverage & exploitation status	NVD · CVE.org
CVE-2026-64564	coverage & exploitation status	NVD · CVE.org
CVE-2026-64565	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

Recent advisories for Linux Kernel

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

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