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Vulnerabilities

Vulnerability · CVE-2026-70462

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 inje

Published Aug 13, 2026 · catalog updated Nov 4, 2026 · rsync 3.1.0 before 3.5.0

Last checked Nov 4, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2026-70462. EPSS is 0.29%. Act only if a listed version of rsync 3.1.0 before 3.5.0 is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (rsync 3.1.0 before 3.5.0).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Unknown—
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.29%
Remediation
Advisory link
Affected products
Alpine:v3.21 rsync · Alpine:v3.22 rsync · Alpine:v3.23 rsync · Alpine:v3.24 rsync

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • Alpine:v3.21 rsync3.1.0 → 3.5.0-r0
  • Alpine:v3.22 rsync3.1.0 → 3.5.0-r0
  • Alpine:v3.23 rsync3.1.0 → 3.5.0-r0
  • Alpine:v3.24 rsync3.1.0 → 3.5.0-r0

How to fix CVE-2026-70462

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-70462. EPSS is 0.29%. Act only if a listed version of rsync 3.1.0 before 3.5.0 is installed.

Which versions are affected?

Compare what you have installed with 3.1.0 → 3.5.0-r0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.29%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Aug 13, 2026 · OpenSSF OSV / OSV Scanner

    Detected

    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

  2. Nov 4, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    rsync fixed in 3.5.0-r0; rsync fixed in 3.5.0-r0; rsync fixed in 3.5.0-r0; rsync fixed in 3.5.0-r0

  3. Nov 4, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    rsync fixed in 3.5.0-r0

  4. Nov 4, 2026 · OpenSSF OSV / OSV Scanner

    Updated

    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

Sources

  • CVE.orgVulnerability recordCVE-2026-70462

    Official CVE identifier

    cve.org
  • OpenSSF OSV / OSV ScannerPackage advisoryALPINE-CVE-2026-70462
    osv.dev
  • Trivy Vulnerability DBPackage advisoryALPINE-CVE-2026-70462

    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 m

    osv.dev

References

Freshness

Last verified in this catalog Nov 4, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • CVE.orgNov 4, 2026
  • Trivy Vulnerability DBNov 4, 2026
  • OpenSSF OSV / OSV ScannerNov 4, 2026