CVE-2025-27440 | Zoom Apps - Heap-based Buffer Overflow

Heap overflow in some Zoom Workplace Apps may allow an authenticated user to conduct an escalation of privilege via network access.

Published: 2025-03-11 Last update: 2025-10-22 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2025-27440 is rated Moderate Risk (56.8/100): CVSS High severity, with medium exploitation likelihood (EPSS 0.48%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2025-27440

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-25 0.57% 0.48% -0.09%
2 2026-04-19 0.16% 0.57% +0.42%
3 2025-11-25 — 0.16% —

Full EPSS history (9 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-27440

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.5 3.1 HIGH
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.8 6.0 [email protected]
8.8 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 5.9 [email protected]

Weakness enumeration for CVE-2025-27440

Affected software / configurations for CVE-2025-27440

Vendor Product Version Raw CPE
zoom meeting_software_development_kit < 6.3.0 cpe:2.3:a:zoom:meeting_software_development_kit:*:*:*:*:*:android:*:*
zoom meeting_software_development_kit < 6.3.0 cpe:2.3:a:zoom:meeting_software_development_kit:*:*:*:*:*:iphone_os:*:*
zoom meeting_software_development_kit < 6.3.0 cpe:2.3:a:zoom:meeting_software_development_kit:*:*:*:*:*:linux:*:*
zoom meeting_software_development_kit < 6.3.0 cpe:2.3:a:zoom:meeting_software_development_kit:*:*:*:*:*:macos:*:*
zoom meeting_software_development_kit < 6.3.0 cpe:2.3:a:zoom:meeting_software_development_kit:*:*:*:*:*:windows:*:*
zoom rooms < 6.3.0 cpe:2.3:a:zoom:rooms:*:*:*:*:*:android:*:*
zoom rooms < 6.3.0 cpe:2.3:a:zoom:rooms:*:*:*:*:*:ipados:*:*
zoom rooms < 6.3.0 cpe:2.3:a:zoom:rooms:*:*:*:*:*:macos:*:*
zoom rooms < 6.3.0 cpe:2.3:a:zoom:rooms:*:*:*:*:*:windows:*:*
zoom rooms_controller < 6.3.0 cpe:2.3:a:zoom:rooms_controller:*:*:*:*:*:android:*:*
zoom rooms_controller < 6.3.0 cpe:2.3:a:zoom:rooms_controller:*:*:*:*:*:linux:*:*
zoom rooms_controller < 6.3.0 cpe:2.3:a:zoom:rooms_controller:*:*:*:*:*:macos:*:*
zoom rooms_controller < 6.3.0 cpe:2.3:a:zoom:rooms_controller:*:*:*:*:*:windows:*:*
zoom workplace < 6.3.0 cpe:2.3:a:zoom:workplace:*:*:*:*:*:android:*:*
zoom workplace < 6.3.0 cpe:2.3:a:zoom:workplace:*:*:*:*:*:iphone_os:*:*
zoom workplace_desktop < 6.3.0 cpe:2.3:a:zoom:workplace_desktop:*:*:*:*:*:linux:*:*
zoom workplace_desktop < 6.3.0 cpe:2.3:a:zoom:workplace_desktop:*:*:*:*:*:macos:*:*
zoom workplace_desktop < 6.3.0 cpe:2.3:a:zoom:workplace_desktop:*:*:*:*:*:windows:*:*
zoom workplace_virtual_desktop_infrastructure < 6.1.16 cpe:2.3:a:zoom:workplace_virtual_desktop_infrastructure:*:*:*:*:*:windows:*:*
zoom workplace_virtual_desktop_infrastructure >= 6.1.17, < 6.2.12 cpe:2.3:a:zoom:workplace_virtual_desktop_infrastructure:*:*:*:*:*:windows:*:*

References for CVE-2025-27440

cvelogic Threat Intelligence