CVE-2025-49463VulnerabilityPublished 10 Jul 2025

CVE-2025-49463: Zoom Clients for iOS · Insufficient Control Flow Management

Affects Zoom Clients for iOSSource CVE Database V5

Not known to be exploited · CVSS 6.5 Medium · fixed in 6.4.5 : update Zoom Clients for iOS when convenient.

Data as of 26 Oct 2026, 06:26 UTC

CVSS 3.1 base score

6.5Medium

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.4% chance of exploitation in 30 days – higher than 41% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 6.4.5

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Attack Vector: Network
Attack Complexity: Low
Privileges Required: None
User Interaction: Required
Scope: Unchanged
Confidentiality: High
Integrity: None
Availability: None

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, up to and including the entire Internet. Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files to carry out an attack.
User Interaction: Required: Successful exploitation of this vulnerability requires a user to take some action before the vulnerability can be exploited.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: High: There is total loss of confidentiality, resulting in all resources within the impacted component being divulged to the attacker. Alternatively, access to only some restricted information is obtained, but the disclosed information presents a direct, serious impact.
Integrity: None: There is no loss of integrity within the impacted component.
Availability: None: There is no impact to availability within the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 10 Jul 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-26.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Affected software

Product	Affected	Fixed in
Zoom Communications Inc. Zoom Clients for iOS	Affected =0	Fixed in–

AI-suggested

European organizations should prioritize updating Zoom Clients for iOS to version 6.4.5 or later, where this vulnerability is addressed. Until updates can be deployed, organizations should implement network-level controls such as restricting access to Zoom services from untrusted networks and monitoring for suspicious network activity related to Zoom traffic. User awareness training should emphasize caution with unsolicited meeting invites or links to reduce the risk of user interaction exploitation. Employing mobile device management (MDM) solutions can enforce application updates and restrict installation of vulnerable versions. Additionally, organizations should review and enhance their incident detection capabilities to identify potential information disclosure attempts via Zoom clients. Where possible, sensitive meetings should avoid using the iOS Zoom client or use alternative secure communication tools until the patch is applied. Finally, organizations should ensure compliance with GDPR by documenting the vulnerability management process and preparing incident response plans for potential data breaches.

Description

Insufficient control flow management in certain Zoom Clients for iOS before version 6.4.5 may allow an unauthenticated user to conduct a disclosure of information via network access.

Impact

For European organizations, the impact of CVE-2025-49463 could be considerable, especially for sectors relying heavily on Zoom for secure communications, such as finance, healthcare, government, and critical infrastructure. The confidentiality breach could expose sensitive meeting content, credentials, or other private data transmitted or cached by the Zoom iOS client. Since the vulnerability can be exploited without authentication, attackers could target users remotely, increasing the risk of espionage, data leakage, or competitive intelligence gathering. The requirement for user interaction (UI:R) suggests that some form of user action, such as clicking a link or joining a malicious meeting, might be needed, which could be leveraged in phishing or social engineering campaigns. The lack of impact on integrity and availability limits the threat to data exposure rather than system disruption or data manipulation. However, the reputational damage and regulatory consequences under GDPR for data breaches could be significant. Organizations with mobile workforces using iOS devices are particularly at risk, as the vulnerability targets the iOS Zoom client specifically. The absence of known exploits in the wild currently reduces immediate risk but does not eliminate the potential for future exploitation.

CWE-691Insufficient Control Flow Management (opens in a new tab)
Pillar weakness
The code does not sufficiently manage its control flow during execution, creating conditions in which the control flow can be modified in unexpected ways.
MITRE discourages mapping vulnerabilities to this broad entry; the root cause is usually a more specific weakness.
Attack patterns
Leveraging Time-of-Check and Time-of-Use (TOCTOU) Race Conditions (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

https//www.zoom.com/en/trust/security-bulletin/zsb-25026/ (opens in a new tab)

Community reviews

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 10 Jul 2025, 17:01 UTC

WeaknessesCWE-691

Technical details

References

Community reviews

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