CVE-2026-70456

HIGHPre-NVD 8.28.2—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.2 under the CNA's CVSS (NVD's own analysis pending). EPSS exploit probability: 0.4%, top 67% of all CVEs by exploit prediction. 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: cna:vulncheck, epss
Trending — 3 sources updated this week
8.2EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.2Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

rsync 3.0.1 before 3.5.0 contains an out-of-bounds write vulnerability in the read_args() function that allows a malicious sender to corrupt adjacent heap memory by sending a crafted argument list. When the argument count causes the argv allocation to be exactly full, the trailing NULL terminator is written one slot beyond the allocation boundary, corrupting adjacent heap memory.

CVSS v3
8.2
EG Score
8.2(medium)
EG Risk
52(Track)
EG Risk 52/100SSVC: Track

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
Severity82% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
33%
KEV
Not listed

Published

August 13, 2026

Last Modified

August 14, 2026

Advisory Details (3)

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

rsync 3.0.1 < 3.5.0 Heap Out-of-Bounds Write via read_args() | Advisories | VulnCheck

https://www.vulncheck.com/advisories/rsync-heap-out-of-bounds-write-via-read-args
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 Patch Available

rsync: Remote out-of-bounds heap write in read_args() when the argument count lands exactly on maxargs · Advisory · RsyncProject/rsync · GitHub

https://github.com/RsyncProject/rsync/security/advisories/GHSA-78jc-79jv-v6rw

Weakness Classification(1)

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

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 21× in last 7d / 47× 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.

  1. 2026-08-30 01:22 UTCEPSS rescore
  2. 2026-08-29 20:39 UTCVendor advisory
  3. 2026-08-29 07:40 UTCEG score recompute
  4. 2026-08-29 07:40 UTCVendor advisory
  5. 2026-08-28 21:42 UTCEPSS rescore
  6. 2026-08-28 08:47 UTCVendor advisory
  7. 2026-08-27 19:32 UTCEG score recompute
  8. 2026-08-27 19:32 UTCVendor advisory
  9. 2026-08-27 05:49 UTCVendor advisory
  10. 2026-08-26 16:27 UTCEG score recompute
  11. 2026-08-26 16:27 UTCVendor advisory
  12. 2026-08-26 14:47 UTCEPSS rescore
  13. 2026-08-26 02:39 UTCEG score recompute
  14. 2026-08-26 02:39 UTCVendor advisory
  15. 2026-08-25 13:49 UTCEPSS rescore
  16. 2026-08-25 13:40 UTCVendor advisory
  17. 2026-08-25 00:42 UTCEG score recompute
  18. 2026-08-25 00:42 UTCVendor advisory
  19. 2026-08-24 11:44 UTCEG score recompute
  20. 2026-08-24 11:44 UTCVendor advisory
  21. 2026-08-23 09:39 UTCEG score recompute
  22. 2026-08-23 00:19 UTCEPSS rescore
  23. 2026-08-22 07:43 UTCEG score recompute
  24. 2026-08-21 23:49 UTCEPSS rescore
  25. 2026-08-21 05:46 UTCEG score recompute
Show 22 more
  1. 2026-08-20 22:56 UTCEPSS rescore
  2. 2026-08-20 03:37 UTCEG score recompute
  3. 2026-08-19 17:04 UTCEPSS rescore
  4. 2026-08-19 01:40 UTCEG score recompute
  5. 2026-08-18 13:49 UTCEPSS rescore
  6. 2026-08-18 13:49 UTCEPSS rescore
  7. 2026-08-17 23:38 UTCEG score recompute
  8. 2026-08-17 13:47 UTCEPSS rescore
  9. 2026-08-16 21:42 UTCEG score recompute
  10. 2026-08-16 14:56 UTCEPSS rescore
  11. 2026-08-16 14:56 UTCEPSS rescore
  12. 2026-08-16 08:44 UTCEG score recompute
  13. 2026-08-16 02:15 UTCEPSS rescore
  14. 2026-08-15 06:48 UTCEG score recompute
  15. 2026-08-15 01:31 UTCEPSS rescore
  16. 2026-08-14 17:07 UTCEG score recompute
  17. 2026-08-14 16:32 UTCEG score recompute
  18. 2026-08-14 16:04 UTCEG score recompute
  19. 2026-08-14 13:14 UTCEG score recompute
  20. 2026-08-13 15:23 UTCEG score recompute
  21. 2026-08-13 15:12 UTCEG score recompute
  22. 2026-08-13 15:11 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-70456?
CVE-2026-70456 is a high vulnerability published on August 13, 2026. rsync 3.0.1 before 3.5.0 contains an out-of-bounds write vulnerability in the read_args() function that allows a malicious sender to corrupt adjacent heap memory by sending a crafted argument list. When the argument count causes the argv allocation to be exactly full, the trailing NULL terminator…
When was CVE-2026-70456 disclosed?
CVE-2026-70456 was first published in the National Vulnerability Database on August 13, 2026, with the most recent update on August 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-70456 actively exploited?
CVE-2026-70456 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 67.4% of all scored CVEs.
What is the CVSS score of CVE-2026-70456?
CVE-2026-70456 has a CVSS v4.0 base score of 8.2 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-70456?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-70456, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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