[UPDATE] [medium] Rsync: Vulnerability allows bypassing security measures

mediumCVE-2026-41035

A remote, authenticated attacker can exploit a vulnerability in Rsync to bypass security measures.

CSIRTS triage

vendor: Rsync product: Rsync Authentication bypass

What: A remote, authenticated attacker can exploit a vulnerability in Rsync to bypass security measures.
Who is affected: Authenticated users of Rsync are affected by this vulnerability.
Urgency: Remediation is medium urgency as it could lead to unauthorized access.
Action: Update Rsync to the latest version to address the vulnerability.

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: medium
Published: 2026-08-18
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-2026-1156

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-2026-410350.39% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 32% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-41035	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

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

unknownMultiple vulnerabilities in Red Hat Linux kernel (July 10, 2026)cert-fr-avis
unknownMultiple vulnerabilities in Red Hat Linux kernel (July 3, 2026)cert-fr-avis
unknownRedHat Linux Kernel Multiple Vulnerabilitieshkcert
unknownMultiple vulnerabilities in the Red Hat Linux kernel (June 26, 2026)cert-fr-avis

Recent advisories for Rsync

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.

high[NEW] [high] Rsync: Multiple vulnerabilitiescert-bund · 2026-08-21
high[UPDATE] [high] Rsync: Multiple vulnerabilitiescert-bund · 2026-08-19
highCVE-2026-70464: rsync daemon 2.0.0 before 3.5.0 contains a denial of service vulnerability that allows unauthe…nvd · 2026-08-13
highCVE-2026-70463: rsync 3.1.0 before 3.5.0 contains an authorization bypass in auth users directive parsing. The…nvd · 2026-08-13
mediumCVE-2026-70462: rsync 3.1.0 before 3.5.0 contains a signed integer overflow vulnerability in the I/O timeout i…nvd · 2026-08-13
highCVE-2026-70461: rsync 3.2.5 before 3.5.0 contains a heap out-of-bounds write vulnerability that allows remote …nvd · 2026-08-13