CVE-2026-70453

HIGHPre-NVD 7.57.5
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

This high-severity CVE scores 7.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.6% (48th 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

Also known asEUVD-2026-58051 (ENISA EUVD)Source: ENISA EUVD

7.5EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.6%CVSS: 7.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

rsync before 3.5.0 contains an algorithmic complexity vulnerability in the hash_search() function that allows a remote attacker to cause a denial of service by delivering a carefully constructed file list. A sender can exploit the quadratic-time worst-case behavior in hash lookups to exhaust receiver CPU resources with a modest number of crafted entries, causing a sustained denial of service.

CVSS v3
7.5
EG Score
7.5HIGHmedium confidence
EG Risk
49
EG Risk 49/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity75% × 45%
Impact severity (EG Severity): CVSS 7.5 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.6% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable yes (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 at low or medium mission impact and sooner than that at high.
EPSS PROB
0.6%
EPSS %ILE
48th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (7.5): severity, escalated by confirmed exploitation. This CVE's 7.5 is its impact severity (EG Severity), not escalated.

EG Severity
7.5 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.a secondary CVSS source · CVSS v3.0 or v3.1
EG Likelihood
0.6% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-10). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Attend at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; 60 days if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (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)14 days if the affected system is publicly exposed; 60 days if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable yes (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

November 6, 2026

Advisory Details (3)

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

rsync < 3.5.0 Algorithmic Complexity DoS via hash_search() | Advisories | VulnCheck

https://www.vulncheck.com/advisories/rsync-algorithmic-complexity-dos-via-hash-search
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: Quadratic CPU exhaustion in hash_search() from a crafted equal-weak-checksum chain · Advisory · RsyncProject/rsync · GitHub

https://github.com/RsyncProject/rsync/security/advisories/GHSA-8x5r-mjx8-83hv

Patch Availability(5)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatcostmanagement/costmanagement-ui-rhel10:17914608512026-10-08redhat
redhatrsync-0:3.1.3-28.el8_102026-09-30redhat
redhatopenshift/ose-rhel-coreos-9:4.22.9.8.202609221802-02026-09-29redhat
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 ... 3.4.4+ds1-1 (28 versions)
  • every version up to 3.5.0+ds1-0+deb12u1: fixed in 3.5.0+ds1-0+deb12u1
—
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(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 37× 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 its CVE.org record (CNA or CISA ADP). 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). "EchelonGraph re-scored" is our own recompute of this CVE's score, not an update from a source, and is not counted in the refreshes above. Most recent first.

Showing the most recent 100 of 192 rows 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 92 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-13 16:57 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  2. 2026-11-12 16:34 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  3. 2026-11-11 16:40 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  4. 2026-11-11 03:56 UTCEchelonGraph re-scored
  5. 2026-11-11 03:56 UTCVendor advisory
  6. 2026-11-10 16:45 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  7. 2026-11-09 16:36 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  8. 2026-11-08 16:40 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  9. 2026-11-07 16:39 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  10. 2026-11-06 16:39 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  11. 2026-11-06 16:12 UTCEchelonGraph re-scored
  12. 2026-11-06 16:12 UTCVendor advisory
  13. 2026-11-05 16:38 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  14. 2026-11-04 16:36 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  15. 2026-11-03 17:06 UTCEchelonGraph re-scored
  16. 2026-11-03 17:06 UTCVendor advisory
  17. 2026-11-03 16:49 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  18. 2026-11-02 16:46 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  19. 2026-11-01 16:35 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  20. 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  21. 2026-10-30 16:35 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  22. 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  23. 2026-10-28 16:33 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  24. 2026-10-27 21:08 UTCEchelonGraph re-scored
  25. 2026-10-27 21:08 UTCVendor advisory
Show 75 more
  1. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  2. 2026-10-26 16:32 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  3. 2026-10-25 16:33 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  4. 2026-10-25 14:08 UTCEchelonGraph re-scored
  5. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  6. 2026-10-24 16:27 UTCVendor advisory
  7. 2026-10-23 18:26 UTCEchelonGraph re-scored
  8. 2026-10-23 18:26 UTCVendor advisory
  9. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  10. 2026-10-22 16:35 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  11. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  12. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  13. 2026-10-20 08:55 UTCEchelonGraph re-scored
  14. 2026-10-20 08:55 UTCVendor advisory
  15. 2026-10-19 16:33 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  16. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  17. 2026-10-18 03:18 UTCEchelonGraph re-scored
  18. 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  19. 2026-10-16 16:43 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  20. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  21. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  22. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  23. 2026-10-13 09:01 UTCEchelonGraph re-scored
  24. 2026-10-13 09:01 UTCVendor advisory
  25. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  26. 2026-10-12 15:43 UTCEchelonGraph re-scored
  27. 2026-10-11 19:29 UTCEchelonGraph re-scored
  28. 2026-10-11 16:44 UTCEchelonGraph re-scored
  29. 2026-10-11 14:05 UTCEchelonGraph re-scored
  30. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  31. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  32. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  33. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  34. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  35. 2026-10-07 02:21 UTCEchelonGraph re-scored
  36. 2026-10-07 02:21 UTCVendor advisory
  37. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  38. 2026-10-06 13:23 UTCEchelonGraph re-scored
  39. 2026-10-06 13:23 UTCVendor advisory
  40. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  41. 2026-10-05 14:38 UTCEchelonGraph re-scored
  42. 2026-10-05 14:38 UTCVendor advisory
  43. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  44. 2026-10-04 22:20 UTCVendor advisory
  45. 2026-10-04 08:20 UTCVendor advisory
  46. 2026-10-03 19:49 UTCEchelonGraph re-scored
  47. 2026-10-03 19:49 UTCVendor advisory
  48. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  49. 2026-10-02 21:52 UTCEchelonGraph re-scored
  50. 2026-10-02 21:52 UTCVendor advisory
  51. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  52. 2026-10-02 07:33 UTCEchelonGraph re-scored
  53. 2026-10-02 07:33 UTCVendor advisory
  54. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  55. 2026-10-01 10:17 UTCVendor advisory
  56. 2026-09-30 21:47 UTCEchelonGraph re-scored
  57. 2026-09-30 21:47 UTCVendor advisory
  58. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  59. 2026-09-29 03:57 UTCEchelonGraph re-scored
  60. 2026-09-29 03:57 UTCVendor advisory
  61. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  62. 2026-09-28 13:18 UTCVendor advisory
  63. 2026-09-28 00:47 UTCEchelonGraph re-scored
  64. 2026-09-28 00:47 UTCVendor advisory
  65. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  66. 2026-09-27 09:44 UTCEchelonGraph re-scored
  67. 2026-09-27 09:44 UTCVendor advisory
  68. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  69. 2026-09-25 03:33 UTCEchelonGraph re-scored
  70. 2026-09-25 03:33 UTCVendor advisory
  71. 2026-09-24 10:44 UTCVendor advisory
  72. 2026-09-23 22:02 UTCEchelonGraph re-scored
  73. 2026-09-23 22:02 UTCVendor advisory
  74. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  75. 2026-09-23 09:31 UTCVendor advisory

Frequently asked(5)

What is CVE-2026-70453?
CVE-2026-70453 is a high-severity vulnerability; its CVE record was published on August 13, 2026. rsync before 3.5.0 contains an algorithmic complexity vulnerability in the hash_search() function that allows a remote attacker to cause a denial of service by delivering a carefully constructed file list. A sender can exploit the quadratic-time worst-case behavior in hash lookups to exhaust…
When was CVE-2026-70453 made public?
CVE-2026-70453 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 November 6, 2026; the record at its source may have been updated since.
Is CVE-2026-70453 actively exploited?
CVE-2026-70453 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.6% probability of exploitation in the next 30 days (48th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-70453?
CVE-2026-70453 has a CVSS base score of 7.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-70453?
A fix for CVE-2026-70453 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-70453 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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