CVE-2026-70462

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.5% (37th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source
Trending — 3 sources updated this week
6.5EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 6.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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.

CVSS v3
6.5
EG Score
6.5MEDIUMmedium confidence
EG Risk
29
EG Risk 29/100

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed (value × EchelonGraph’s weight)
Severity65% × 45%
The EG Score, 6.5 of 10.
Exploitation0.4% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.5%
EPSS %ILE
37th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

August 13, 2026

Last Modified

September 8, 2026

Advisory Details (3)

Auto-updated Aug 13, 2026
Patch available. Sources: github, github_release.
Web page

rsync 3.1.0 < 3.5.0 Signed Integer Overflow via MSG_IO_TIMEOUT | Advisories | VulnCheck

https://www.vulncheck.com/advisories/rsync-signed-integer-overflow-via-msg-io-timeout
GitHub release Patch Available

v3.5.0

Patch available: RsyncProject/rsync v3.5.0

https://github.com/RsyncProject/rsync/releases/tag/v3.5.0
GitHub advisoryMentions a patch (unverified)

rsync: Peer-supplied MSG_IO_TIMEOUT defeats the client's own I/O timeout (signed overflow, and a non-positive value) · Advisory · RsyncProject/rsync · GitHub

https://github.com/RsyncProject/rsync/security/advisories/GHSA-j9wh-5jmp-2m64

Vendor Advisories for CVE-2026-70462(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(7 across 7 ecosystems)
Alpine:v3.21(1)
PackageVulnerable rangeFix by version rangeDependents
rsync—
  • every version up to 3.5.0-r0: fixed in 3.5.0-r0
—
Alpine:v3.22(1)
PackageVulnerable rangeFix by version rangeDependents
rsync—
  • every version up to 3.5.0-r0: fixed in 3.5.0-r0
—
Alpine:v3.23(1)
PackageVulnerable rangeFix by version rangeDependents
rsync—
  • every version up to 3.5.0-r0: fixed in 3.5.0-r0
—
Alpine:v3.24(1)
PackageVulnerable rangeFix by version rangeDependents
rsync—
  • every version up to 3.5.0-r0: fixed in 3.5.0-r0
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
rsync3.2.7-1 ... 3.5.1+ds1-1 (32 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
rsync3.4.1+ds1-5 ... 3.4.4+ds1-1 (13 versions)
  • every version up to 3.5.0+ds1-0+deb13u1: fixed in 3.5.0+ds1-0+deb13u1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
rsync3.4.1+ds1-5 ... 3.4.4+ds1-1 (9 versions)
  • every version up to 3.5.0+ds1-1: fixed in 3.5.0+ds1-1
—

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 14× in last 7d / 65× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 100 of 135 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 35 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-11 19:29 UTCEG score recompute
  2. 2026-10-11 16:44 UTCEG score recompute
  3. 2026-10-11 14:05 UTCEG score recompute
  4. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  5. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  6. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  7. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  8. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  9. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  10. 2026-10-06 13:23 UTCEG score recompute
  11. 2026-10-06 13:23 UTCVendor advisory
  12. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  13. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  14. 2026-10-04 22:21 UTCVendor advisory
  15. 2026-10-03 19:49 UTCEG score recompute
  16. 2026-10-03 19:49 UTCVendor advisory
  17. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  18. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  19. 2026-10-02 07:34 UTCEG score recompute
  20. 2026-10-02 07:34 UTCVendor advisory
  21. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.5% · 36th percentile
  22. 2026-09-30 21:47 UTCEG score recompute
  23. 2026-09-30 21:47 UTCVendor advisory
  24. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.5% · 36th percentile
  25. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.5% · 36th percentile
Show 75 more
  1. 2026-09-28 10:53 UTCEG score recompute
  2. 2026-09-28 10:53 UTCVendor advisory
  3. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.5% · 36th percentile
  4. 2026-09-27 09:44 UTCEG score recompute
  5. 2026-09-27 09:44 UTCVendor advisory
  6. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.5% · 36th percentile
  7. 2026-09-25 03:33 UTCEG score recompute
  8. 2026-09-25 03:33 UTCVendor advisory
  9. 2026-09-23 22:14 UTCEG score recompute
  10. 2026-09-23 22:14 UTCVendor advisory
  11. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  12. 2026-09-22 21:05 UTCEG score recompute
  13. 2026-09-22 21:05 UTCVendor advisory
  14. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  15. 2026-09-21 19:56 UTCEG score recompute
  16. 2026-09-21 19:56 UTCVendor advisory
  17. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  18. 2026-09-20 15:57 UTCEG score recompute
  19. 2026-09-20 15:57 UTCVendor advisory
  20. 2026-09-19 14:38 UTCEG score recompute
  21. 2026-09-19 14:38 UTCVendor advisory
  22. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  23. 2026-09-18 13:12 UTCEG score recompute
  24. 2026-09-18 13:12 UTCVendor advisory
  25. 2026-09-17 12:04 UTCEG score recompute
  26. 2026-09-17 12:04 UTCVendor advisory
  27. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  28. 2026-09-16 10:33 UTCEG score recompute
  29. 2026-09-16 10:33 UTCVendor advisory
  30. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  31. 2026-09-15 07:21 UTCEG score recompute
  32. 2026-09-15 07:21 UTCVendor advisory
  33. 2026-09-15 03:12 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  34. 2026-09-14 06:12 UTCEG score recompute
  35. 2026-09-14 06:12 UTCVendor advisory
  36. 2026-09-13 05:04 UTCEG score recompute
  37. 2026-09-13 05:04 UTCVendor advisory
  38. 2026-09-12 15:02 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  39. 2026-09-12 03:55 UTCEG score recompute
  40. 2026-09-12 03:55 UTCVendor advisory
  41. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  42. 2026-09-11 02:46 UTCEG score recompute
  43. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  44. 2026-09-10 01:37 UTCEG score recompute
  45. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  46. 2026-09-08 20:57 UTCEG score recompute
  47. 2026-09-08 06:58 UTCEG score recompute
  48. 2026-09-08 06:58 UTCVendor advisory
  49. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  50. 2026-09-07 05:44 UTCEG score recompute
  51. 2026-09-07 05:44 UTCVendor advisory
  52. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  53. 2026-09-06 03:20 UTCEG score recompute
  54. 2026-09-06 03:20 UTCVendor advisory
  55. 2026-09-05 15:31 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  56. 2026-09-05 02:10 UTCEG score recompute
  57. 2026-09-05 02:10 UTCVendor advisory
  58. 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  59. 2026-09-04 01:01 UTCVendor advisory
  60. 2026-09-02 23:11 UTCEG score recompute
  61. 2026-09-02 23:11 UTCVendor advisory
  62. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  63. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  64. 2026-09-01 13:27 UTCEG score recompute
  65. 2026-09-01 13:27 UTCVendor advisory
  66. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  67. 2026-08-31 12:18 UTCEG score recompute
  68. 2026-08-31 12:18 UTCVendor advisory
  69. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  70. 2026-08-30 11:06 UTCEG score recompute
  71. 2026-08-30 11:06 UTCVendor advisory
  72. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  73. 2026-08-29 09:55 UTCEG score recompute
  74. 2026-08-29 09:55 UTCVendor advisory
  75. 2026-08-28 21:42 UTCEPSS rescoreEPSS 0.3% · 17th percentile

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-70462?
CVE-2026-70462 is a medium-severity vulnerability; its CVE record was published on August 13, 2026. 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 MSGIOTIMEOUT messages carrying non-positive (zero or negative) values. Attackers can craft malicious MSGIOTIMEOUT…
When was CVE-2026-70462 made public?
CVE-2026-70462 was made public on August 12, 2026: that is the date its CVE record's CNA, VulnCheck, gives for when the vulnerability was made public. The CVE record itself was published on August 13, 2026. EchelonGraph's copy of the record carries a last-modified date of September 8, 2026; the record at its source may have been updated since.
Is CVE-2026-70462 actively exploited?
CVE-2026-70462 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (37th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-70462?
CVE-2026-70462 has a CVSS base score of 6.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-70462?
A fix for CVE-2026-70462 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-70462 are linked in the Vendor Advisories panel on this page.

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