> CVE-2026-70464 [HIGH]

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PUBLISHED
2026-08-13 15:20
MODIFIED
2026-08-13 15:20
CVSS_SCORE V3
8.7
EPSS (Prob. Exploit)
0.57%
Top 53.3%
DATA SOURCES:
NVD đź”— 2026-08-13 CWE MITRE đź”— 2026-11-01 FIRST EPSS đź”— 2026-10-25 OSV đź”— 2026-08-20 MSRC đź”— 2026-09-01

> DESCRIPTION

rsync daemon 2.0.0 before 3.5.0 contains a denial of service vulnerability that allows unauthenticated remote attackers to exhaust daemon connection slots by stalling the handshake process before or after module selection without triggering the I/O timeout. Attackers can open many simultaneous connections and trickle data at the minimum rate to avoid timeout, or stall entirely before module selection where no timeout applies, consuming all available connection slots and denying service to legitimate clients.

> AFFECTED_PRODUCTS

ℹ️ Aucun produit affecté n'a encore été publié par NVD pour cette CVE.

> CVSS V3 METRICS

CVSS_VECTOR
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Métrique Valeur Interprétation
AV (Vecteur d'Attaque)
Attack Vector
Network (N)
Exploit possible à distance via réseau (HTTP, API, etc.)
AC (Complexité d'Attaque)
Attack Complexity
Low (L)
Peu de conditions requises pour exploiter
PR (Privilèges Requis)
Privileges Required
None (N)
Aucune authentification requise
UI (Interaction Utilisateur)
User Interaction
None (N)
Aucune interaction utilisateur nécessaire
S (Périmètre)
Scope
Unchanged (U)
Impact reste dans le périmètre du composant compromis
C (Impact Confidentialité)
Confidentiality Impact
None (N)
Aucune divulgation d'informations
I (Impact Intégrité)
Integrity Impact
None (N)
Aucune modification de données possible
A (Impact Disponibilité)
Availability Impact
High (H)
Interruption totale du service possible

> RÉSUMÉ DES IMPACTS

Confidentialité
None
Aucune divulgation d'informations
Intégrité
None
Aucune modification de données possible
Disponibilité
High
Interruption totale du service possible

> WEAKNESSES

CWE-770

> CWE DETAILED DESCRIPTIONS

CWE-770: Allocation of Resources Without Limits or Throttling - The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.

> RED HAT SECURITY ADVISORIES

Red Hat Security Advisory: rsync security, bug fix, and enhancement update
An update for rsync is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CV...
Red Hat Security Advisory: rsync security, bug fix, and enhancement update
An update for rsync is now available for Red Hat Enterprise Linux 10. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (C...
Red Hat Security Advisory: rsync security, bug fix, and enhancement update
An update for rsync is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CV...
Red Hat Security Advisory: OpenShift Container Platform 4.22.16 bug fix and security update
Red Hat OpenShift Container Platform release 4.22.16 is now available with updates to packages and images that fix several bugs and add enhancements. This release includes a security update for Red...
Red Hat Security Advisory: Red Hat Cost Management On-Premise container image update
Updated container image for Red Hat Cost Management On-Premise is now available.

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

rsync 2.0.0 < 3.5.0 Connection Slot Exhaustion DoS via Handshake Stall

AFFECTED PACKAGES:
Unknown / Unknown
142 versions affected
ALIASES:
GHSA-hrwq-ccf7-rw5m

> HISTORIQUE DES MODIFICATIONS

Première apparition
13/08/2026 15:20
Source: NVD
đź“Š ENRICHISSEMENT 01/09/2026 06:02
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle valeur:
CWE-770: Allocation of Resources Without Limits or Throttling - The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the ...
Total des modifications: 1 Dernière mise à jour: 2 months ago

> REFERENCES

https://github.com/RsyncProject/rsync/releases/tag/v3.5.0
https://github.com/RsyncProject/rsync/security/advisories/GHSA-hrwq-ccf7-rw5m
https://www.vulncheck.com/advisories/rsync-connection-slot-exhaustion-dos-via-ha...
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