CVE-2026-70452

HIGHPre-NVD 7.47.4—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.4 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.5% (37th percentile of EPSS-scored CVEs). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Trending — 3 sources updated this week
7.4EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 7.4Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

rsync 3.1.0 before 3.5.0 contains an access control bypass vulnerability that allows remote attackers to circumvent hosts deny rules by inducing DNS resolution failures during hostname-based access control evaluation. When a DNS lookup for a hostname-based deny rule fails, the daemon skips the rule rather than defaulting to a deny decision, enabling attackers who can trigger DNS failures to bypass module-level IP access controls and gain unauthorized access to restricted module file trees.

CVSS v3
7.4
EG Score
7.4HIGHmedium confidence
EG Risk
33
EG Risk 33/100CISA SSVC

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
Severity74% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.5%
EPSS %ILE
38th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

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

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 13, 2026

Last Modified

September 8, 2026

Advisory Details (3)

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

rsync 3.1.0 < 3.5.0 Access Control Bypass via DNS Resolution Failure | Advisories | VulnCheck

https://www.vulncheck.com/advisories/rsync-access-control-bypass-via-dns-resolution-failure
github_release Patch Available

v3.5.0

Patch available: RsyncProject/rsync v3.5.0

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

rsync: `hosts deny` fails OPEN when a configured hostname cannot be resolved, admitting the host it was meant to block · Advisory · RsyncProject/rsync · GitHub

https://github.com/RsyncProject/rsync/security/advisories/GHSA-6692-28cx-wpqq

Vendor Advisories for CVE-2026-70452(3)

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

Patch Availability(4)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatrsync-0:3.1.3-28.el8_102026-09-30redhat
redhatrhcos-4.22.9.8.202609221802-02026-09-29redhat
redhatrsync-0:3.5.0-3.el10_22026-09-14redhat
redhatrsync-0:3.2.7-1.el9_82026-09-14redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

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.

Additional Vendor Advisories

(3)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 17× in last 7d / 87× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. 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. Most recent first.

Showing the most recent 100 of 171 total refreshes for this CVE.

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

Related CVEs(same product + same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-70452?
CVE-2026-70452 is a high vulnerability published on August 13, 2026. rsync 3.1.0 before 3.5.0 contains an access control bypass vulnerability that allows remote attackers to circumvent hosts deny rules by inducing DNS resolution failures during hostname-based access control evaluation. When a DNS lookup for a hostname-based deny rule fails, the daemon skips the rule…
When was CVE-2026-70452 disclosed?
CVE-2026-70452 was first published on August 13, 2026, with the most recent update on September 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-70452 actively exploited?
CVE-2026-70452 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (38th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-70452?
CVE-2026-70452 has a CVSS base score of 7.4 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-70452?
A fix for CVE-2026-70452 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-70452 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-70452

Explore →

Is Your Infrastructure Affected by CVE-2026-70452?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Book a Demo →Browse All CVEs