CVE-2026-73108

HIGHPre-NVD 7.57.5—
EchelonGraph scoreHIGH confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-08-29. the CNA's CVSS baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:vulncheck, epss, ghsa
Trending — 4 sources updated this week
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 7.5Exploit: None knownExposed: 0

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

RustDesk versions before 1.4.7 contain an uncontrolled speculative memory allocation vulnerability in BytesCodec. Before authentication, the decoder trusts the payload length encoded in a four-byte frame header and reserves that amount before receiving the payload. A crafted header can request up to 1,073,741,823 bytes of capacity, allowing unauthenticated attackers to use concurrent TCP connections to cause memory exhaustion and denial of service. The fix caps header-triggered speculative preallocation at 256 KiB.

CVSS v3
7.5
EG Score
7.5(high)
EG Risk
49(Track)
EG Risk 49/100SSVC: 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
Severity75% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
42%
KEV
Not listed

Published

August 26, 2026

Last Modified

August 29, 2026

Advisory Details (4)

Auto-updated Aug 26, 2026
Patch available. Sources: github_release, github_commit.
generic

RustDesk < 1.4.7 Uncontrolled Memory Allocation DoS via BytesCodec | Advisories | VulnCheck

https://www.vulncheck.com/advisories/rustdesk-uncontrolled-memory-allocation-dos-via-bytescodec
github_commit

commit 518296f2570d (rustdesk/rustdesk)

Fix landed in rustdesk/rustdesk commit 518296f2570d — awaiting tagged release

https://github.com/rustdesk/rustdesk/commit/518296f2570d107ad416f29ade5fcce3177f4115
github_commit

commit 547da54b4ee5 (rustdesk/hbb_common)

Fix landed in rustdesk/hbb_common commit 547da54b4ee5 — awaiting tagged release

https://github.com/rustdesk/hbb_common/commit/547da54b4ee58eed47163fbd47edb4639e3d88de
github_release Patch Available

1.4.7

Patch available: rustdesk/rustdesk 1.4.7

https://github.com/rustdesk/rustdesk/releases/tag/1.4.7

Vendor Advisories for CVE-2026-73108(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 12× in last 7d / 12× 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. 2026-08-30 00:33 UTCGHSA enrichment
  3. 2026-08-29 11:59 UTCEG score recompute
  4. 2026-08-29 11:59 UTCGHSA enrichment
  5. 2026-08-28 23:28 UTCEG score recompute
  6. 2026-08-28 23:04 UTCEG score recompute
  7. 2026-08-28 21:42 UTCEPSS rescore
  8. 2026-08-27 18:07 UTCEG score recompute
  9. 2026-08-27 14:25 UTCEPSS rescore
  10. 2026-08-26 15:51 UTCEG score recompute
  11. 2026-08-26 13:24 UTCEG score recompute
  12. 2026-08-26 13:22 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-73108?
CVE-2026-73108 is a high vulnerability published on August 26, 2026. RustDesk versions before 1.4.7 contain an uncontrolled speculative memory allocation vulnerability in BytesCodec. Before authentication, the decoder trusts the payload length encoded in a four-byte frame header and reserves that amount before receiving the payload. A crafted header can request up…
When was CVE-2026-73108 disclosed?
CVE-2026-73108 was first published in the National Vulnerability Database on August 26, 2026, with the most recent update on August 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-73108 actively exploited?
CVE-2026-73108 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 57.6% of all scored CVEs.
What is the CVSS score of CVE-2026-73108?
CVE-2026-73108 has a CVSS v4.0 base score of 7.5 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-73108?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-73108, 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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