CVE-2026-18358

HIGHPre-NVD 7.57.5—
EchelonGraph scoreHIGH confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-07-31. a secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
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

A fix is available — apply it.

A flaw was found in gnome-remote-desktop as shipped in Red Hat Enterprise Linux. When the daemon is running in system mode with RDP enabled, the incoming connection handler bypasses the connection throttler, allowing an unauthenticated remote attacker to open many parallel pre-authentication connections to the RDP listener. This can accumulate accepted sockets and pending routing-token operations until timeout, exhausting resources and preventing legitimate users from establishing RDP sessions. This issue does not affect the upstream version.

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

July 31, 2026

Last Modified

August 13, 2026

Advisory Details (2)

Auto-updated Jul 31, 2026
Patch available. Sources: redhat.
redhat

2462876 – (CVE-2026-18358) CVE-2026-18358 gnome-remote-desktop: gnome-remote-desktop system-mode RDP server missing connection throttling allows unauthenticated denial of service

https://bugzilla.redhat.com/show_bug.cgi?id=2462876
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-18358

Vendor Advisories for CVE-2026-18358(2)

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

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatgnome-remote-desktop-0:49.3-4.el10_22026-08-13redhat

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

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
gnome-remote-desktop0.1.9-5 ... 50~beta-1 (84 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
gnome-remote-desktop43.3-1 ... 50~beta-1 (58 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
gnome-remote-desktop48.1-4 ... 50~beta-1 (15 versions)——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
gnome-remote-desktop48.1-4 ... 50~beta-1 (15 versions)——

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 40× in last 7d / 96× 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. 2026-08-20 08:08 UTCVendor advisory
  2. 2026-08-20 08:08 UTCGHSA enrichment
  3. 2026-08-19 19:34 UTCEG score recompute
  4. 2026-08-19 19:34 UTCVendor advisory
  5. 2026-08-19 19:34 UTCGHSA enrichment
  6. 2026-08-19 17:03 UTCEPSS rescore
  7. 2026-08-19 07:00 UTCVendor advisory
  8. 2026-08-19 07:00 UTCGHSA enrichment
  9. 2026-08-18 18:26 UTCEG score recompute
  10. 2026-08-18 18:26 UTCVendor advisory
  11. 2026-08-18 18:26 UTCGHSA enrichment
  12. 2026-08-18 13:48 UTCEPSS rescore
  13. 2026-08-18 05:41 UTCVendor advisory
  14. 2026-08-18 05:41 UTCGHSA enrichment
  15. 2026-08-17 17:07 UTCEG score recompute
  16. 2026-08-17 17:07 UTCVendor advisory
  17. 2026-08-17 17:07 UTCGHSA enrichment
  18. 2026-08-17 13:47 UTCEPSS rescore
  19. 2026-08-17 04:33 UTCVendor advisory
  20. 2026-08-17 04:33 UTCGHSA enrichment
  21. 2026-08-16 15:59 UTCEG score recompute
  22. 2026-08-16 15:59 UTCVendor advisory
  23. 2026-08-16 15:59 UTCGHSA enrichment
  24. 2026-08-16 14:56 UTCEPSS rescore
  25. 2026-08-16 03:25 UTCEG score recompute
Show 71 more
  1. 2026-08-16 03:25 UTCVendor advisory
  2. 2026-08-16 03:25 UTCGHSA enrichment
  3. 2026-08-16 02:14 UTCEPSS rescore
  4. 2026-08-15 14:51 UTCVendor advisory
  5. 2026-08-15 14:51 UTCGHSA enrichment
  6. 2026-08-15 02:16 UTCEG score recompute
  7. 2026-08-15 02:16 UTCVendor advisory
  8. 2026-08-15 02:16 UTCGHSA enrichment
  9. 2026-08-15 01:30 UTCEPSS rescore
  10. 2026-08-14 13:42 UTCVendor advisory
  11. 2026-08-14 13:42 UTCGHSA enrichment
  12. 2026-08-14 01:08 UTCEG score recompute
  13. 2026-08-14 01:08 UTCVendor advisory
  14. 2026-08-14 01:08 UTCGHSA enrichment
  15. 2026-08-13 22:00 UTCEPSS rescore
  16. 2026-08-13 12:34 UTCEG score recompute
  17. 2026-08-13 12:34 UTCVendor advisory
  18. 2026-08-13 12:34 UTCGHSA enrichment
  19. 2026-08-13 11:27 UTCEG score recompute
  20. 2026-08-13 11:27 UTCGHSA enrichment
  21. 2026-08-13 03:19 UTCGHSA enrichment
  22. 2026-08-12 14:45 UTCEG score recompute
  23. 2026-08-12 14:45 UTCGHSA enrichment
  24. 2026-08-12 13:50 UTCEPSS rescore
  25. 2026-08-12 02:11 UTCEG score recompute
  26. 2026-08-12 02:11 UTCGHSA enrichment
  27. 2026-08-11 13:42 UTCEPSS rescore
  28. 2026-08-11 13:37 UTCGHSA enrichment
  29. 2026-08-11 01:03 UTCEG score recompute
  30. 2026-08-11 01:03 UTCGHSA enrichment
  31. 2026-08-11 00:00 UTCEPSS rescore
  32. 2026-08-10 12:28 UTCGHSA enrichment
  33. 2026-08-09 23:46 UTCEG score recompute
  34. 2026-08-09 23:46 UTCGHSA enrichment
  35. 2026-08-09 13:46 UTCEPSS rescore
  36. 2026-08-09 11:12 UTCGHSA enrichment
  37. 2026-08-08 22:38 UTCEG score recompute
  38. 2026-08-08 22:38 UTCGHSA enrichment
  39. 2026-08-08 16:37 UTCEPSS rescore
  40. 2026-08-08 10:03 UTCGHSA enrichment
  41. 2026-08-07 21:29 UTCEG score recompute
  42. 2026-08-07 21:29 UTCGHSA enrichment
  43. 2026-08-07 08:55 UTCGHSA enrichment
  44. 2026-08-06 20:21 UTCEG score recompute
  45. 2026-08-06 20:21 UTCGHSA enrichment
  46. 2026-08-06 13:46 UTCEPSS rescore
  47. 2026-08-06 07:47 UTCEG score recompute
  48. 2026-08-06 07:47 UTCGHSA enrichment
  49. 2026-08-05 19:17 UTCEPSS rescore
  50. 2026-08-05 19:13 UTCGHSA enrichment
  51. 2026-08-05 06:38 UTCGHSA enrichment
  52. 2026-08-04 18:05 UTCEG score recompute
  53. 2026-08-04 18:04 UTCGHSA enrichment
  54. 2026-08-04 15:10 UTCEPSS rescore
  55. 2026-08-04 10:38 UTCEPSS rescore
  56. 2026-08-04 05:30 UTCGHSA enrichment
  57. 2026-08-03 16:56 UTCGHSA enrichment
  58. 2026-08-03 11:18 UTCEG score recompute
  59. 2026-08-03 11:17 UTCGHSA enrichment
  60. 2026-08-03 10:35 UTCEPSS rescore
  61. 2026-08-02 22:39 UTCGHSA enrichment
  62. 2026-08-02 10:05 UTCEG score recompute
  63. 2026-08-02 10:05 UTCGHSA enrichment
  64. 2026-08-02 02:26 UTCEPSS rescore
  65. 2026-08-01 21:31 UTCGHSA enrichment
  66. 2026-08-01 08:57 UTCGHSA enrichment
  67. 2026-07-31 20:23 UTCEG score recompute
  68. 2026-07-31 20:22 UTCGHSA enrichment
  69. 2026-07-31 13:20 UTCEG score recompute
  70. 2026-07-31 12:34 UTCEG score recompute
  71. 2026-07-31 12:33 UTCMITRE cvelistV5first tracked

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-18358?
CVE-2026-18358 is a high vulnerability published on July 31, 2026. A flaw was found in gnome-remote-desktop as shipped in Red Hat Enterprise Linux. When the daemon is running in system mode with RDP enabled, the incoming connection handler bypasses the connection throttler, allowing an unauthenticated remote attacker to open many parallel pre-authentication…
When was CVE-2026-18358 disclosed?
CVE-2026-18358 was first published in the National Vulnerability Database on July 31, 2026, with the most recent update on August 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-18358 actively exploited?
CVE-2026-18358 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 57.9% of all scored CVEs.
What is the CVSS score of CVE-2026-18358?
CVE-2026-18358 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-18358?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-18358, 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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