TI-2026-49235 Aliases CVE-2026-70462

rsync 3.1.0 < 3.5.0 Signed Integer Overflow via MSG_IO_TIMEOUT

LOW 31CWE-190Published 2026-08-13 · Updated 2026-08-14

Key facts

Attack vector: Network
Privileges required: None
User interaction: Passive
Attack complexity: Low
Attack requirements: None
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · High
Fix status: Partial Red Hat: 7 without a fix

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-190 and the CVSS impact.

Summary

rsync 3.1.0 before 3.5.0 contains a signed integer overflow vulnerability in the I/O timeout implementation that allows attackers to permanently disable connection timeouts by injecting MSG_IO_TIMEOUT messages carrying non-positive (zero or negative) values. Attackers can craft malicious MSG_IO_TIMEOUT messages that cause the timeout variable to wrap to a non-positive value, preventing the timeout check from firing and enabling idle or stalled connections to hold daemon slots indefinitely, leading to resource exhaustion.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.0029 21st percentileScored 2026-11-07

Fix Partial rsync (RsyncProject): 3.5.0Red Hat: 7 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Samba	rsync	3.1.0 – 3.4.4	3.5.0	Patch available	CNA

rsync VendorSamba Affected 3.1.0 – 3.4.4 Fixed in 3.5.0 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:samba:rsync::::::::	3.1.0 to before 3.5.0	Vulnerable	Samba

cpe:2.3:a:samba:rsync:*:*:*:*:*:*:*:* Versions 3.1.0 to before 3.5.0 Vulnerable ·Samba

Remediation

Fix · CNA rsync (RsyncProject) Fixed in 3.5.0

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

Product	Status	Plan or fix
Red Hat Enterprise Linux 10	Affected	No fix yet: Fix deferred
Red Hat Enterprise Linux 7	Affected	No fix yet: Fix deferred
Red Hat Enterprise Linux 8	Affected	No fix yet: Fix deferred
Red Hat Enterprise Linux 9	Affected	No fix yet: Fix deferred
Red Hat OpenShift AI (RHOAI)	Affected	—
Red Hat OpenShift Container Platform 4	Affected	No fix yet: Fix deferred
Red Hat OpenShift Container Platform 5	Affected	No fix yet: Fix deferred

Not affected: 1 product

Red Hat Enterprise Linux 6

Timeline

2026-10-02 Threatist record created from CVE-2026-70462
2026-11-06 Affected versions changed · Red Hat
2026-11-06 Affected versions changed · Red Hat

References

Advisory 1

GitHub Security Advisory (GHSA-j9wh-5jmp-2m64)

Other 1

rsync 3.5.0 Release Notes

TI-2024-11208 Rsync: heap buffer overflow in rsync due to improper checksum length handling CVSS 3.1CRITICAL 9.8
TI-2024-11209 Rsync: info leak via uninitialized stack contents CVSS 3.1HIGH 7.5
TI-2024-11212 Rsync: --safe-links option bypass leads to path traversal CVSS 3.1HIGH 7.5
TI-2024-11211 Rsync: path traversal vulnerability in rsync CVSS 3.1HIGH 7.5
TI-2024-11210 Rsync: rsync server leaks arbitrary client files CVSS 3.1MEDIUM 6.8
TI-2017-12160 The receive_xattr function in xattrs.c in rsync 3.1.2 and 3.1.3-development does not… CVSS 3.1CRITICAL 9.8

See all 56 →

Sources

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