CVE-2019-11634

CRITICALNVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score elevated to 9.8 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 9.8 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — 4 sources updated this weekExploited in the wild
9.8
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS: 8%CVSS: 9.8Exploit: NoneExposed: 0

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

Citrix Workspace App before 1904 for Windows has Incorrect Access Control.

CVSS v3
9.8
EG Score
9.8(high)
EG Risk
99(Act)
EG Risk 99/100SSVC: Act

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
Severity98% × 45%
Exploitation100% × 40%
Automatability100% × 15%
Action: Fix now — active exploitation, automatable, high impact.
EPSS
94.2%
KEV
⚠ Exploited

Published

May 22, 2019

Last Modified

November 6, 2025

Advisory Details (3)

Auto-updated Jun 1, 2026
⚠️ Active exploitation confirmed. Patch available. Sources: cisa.
cisa Patch Available🔴 Active Exploitation

Known Exploited Vulnerabilities Catalog | CISA

Known Exploited Vulnerabilities Catalog | CISA. Listed in CISA Known Exploited Vulnerabilities catalog.

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-11634
generic

Loading...

https://support.citrix.com/v1/search?searchQuery=%22%22&lang=en&sort=cr_date_desc&prod=&pver=&ct=Security+Bulletin
generic

Loading...

https://support.citrix.com/article/CTX251986

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 64× in last 7d / 253× 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 453 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(6)

What is CVE-2019-11634?
CVE-2019-11634 is a critical vulnerability published on May 22, 2019. Citrix Workspace App before 1904 for Windows has Incorrect Access Control.
When was CVE-2019-11634 disclosed?
CVE-2019-11634 was first published in the National Vulnerability Database on May 22, 2019, with the most recent update on November 6, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2019-11634 actively exploited?
Yes. CISA added CVE-2019-11634 to the Known Exploited Vulnerabilities catalog on November 3, 2021, affecting Citrix Workspace Application and Receiver for Windows. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2019-11634?
CVE-2019-11634 has a CVSS v3 base score of 9.8 (NVD).
Which products are affected by CVE-2019-11634?
CVE-2019-11634 affects Citrix Workspace Application and Receiver for Windows. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2019-11634?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2019-11634, 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

Explore the affected products and dependency analysis for CVE-2019-11634

Explore →

Is Your Infrastructure Affected by CVE-2019-11634?

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

Start Free Scan →Browse All CVEs