CVE-2026-78547: citrix citrix workspace app for windows Out-of-bounds Write
CVSS: 4.4v4.0MediumAwaiting analysis
Published 11-09-2026Last modified 11-09-2026
Vulnerability summary
CVE-2026-78547 is a medium (CVSS 4.4) Out-of-bounds Write vulnerability in citrix citrix workspace app for windows. EPSS estimates a 0.15% chance of exploitation in the next 30 days, higher than 3.5% of scored vulnerabilities.
CVSS score
4.4/10
010
Medium · v4.0 (CVE.org)EPSS score
0.15%
0%100%
Low · -0.01 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 11-09-2026PublishedVulnerability first disclosed.
- 11-09-2026Last modifiedVulnerability information updated.
Description
Out-of-bounds write vulnerability in Citrix Citrix Workspace app for Windows. This issue affects Citrix Workspace app for Windows: before 2603.11 Current Release (CR), before 2507.1 LTSR CU3, and before LTSR 2607.
CVSS metrics
2 scores · 2 sources · 1 versionMedium 4.4Preferred score · CVE.org (CNA)
CVSS:4.0/AV:P/AC:H/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:NSourcesAll 2 agree
- NVDNIST4.4MediumCVSS:4.0/AV:P/AC:H/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS trend
Probability
0.15%
Chance of exploitation in the next 30 days
Percentile
4%
Versus all other CVEs
30-day change
-0.01 pp
From 0.15% on 18-09-2026
18-09-202618-10-2026
EPSS score0.15%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Citrix1 product
- citrix workspace app for windows< 2603.11 Current Release (CR) | < 2507.1 LTSR CU3 | < LTSR 2607
1 vendor · 1 product