VulnerabilityPublished 11 Feb 2026Updated 2 Apr 2026

CVE-2026-20671: Apple iOS and iPadOS · An attacker in a privileged network position may be able to intercept network traffic

Affects Apple iOS and iPadOSSource CVE Database V5

Not known to be exploited · CVSS 3.1 Low : upgrade to 26.3 or 18.7.5 when convenient.

Data as of 26 Oct 2026, 13:47 UTC

CVSS 3.1 base score

3.1Low

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

EPSS: 0.3% chance of exploitation in 30 days – higher than 29% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 26.3, 18.7.5, 15.7.4 +1

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

Attack Vector: Network
Attack Complexity: High
Privileges Required: Low
User Interaction: None
Scope: Unchanged
Confidentiality: Low
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: High: A successful attack depends on conditions beyond the attacker's control. That is, a successful attack cannot be accomplished at will, but requires the attacker to invest in some measurable amount of effort in preparation or execution against the vulnerable component before a successful attack can be expected. For example, a successful attack may require an attacker to: gather knowledge about the environment in which the vulnerable target/component exists; prepare the target environment to improve exploit reliability; or inject themselves into the logical network path between the target and the resource requested by the victim in order to read and/or modify network communications (e.g., a man in the middle attack).
Privileges Required: Low: The attacker is authorized with (i.e., requires) privileges that provide basic user capabilities that could normally affect only settings and files owned by a user. Alternatively, an attacker with Low privileges may have the ability to cause an impact only to non-sensitive resources.
User Interaction: None: The vulnerable system can be exploited without any interaction from any user.
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: Low: There is some loss of confidentiality. Access to some restricted information is obtained, but the attacker does not have control over what information is obtained, or the amount or kind of loss is limited. The information disclosure does not cause a direct, serious loss to the impacted component.
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 11 Feb 2026
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 26 Oct 2026.

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 or the CVSS exploit maturity 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

Upgrade iOS and iPadOS to 26.3 or 18.7.5; macOS to 26.3, 15.7.4 or 14.8.4; tvOS and visionOS and watchOS to 26.3.

Affected software

Product	Affected	Fixed in
AppleiOS and iPadOS	Affected <26.3	Fixed in 26.3
AppleiOS and iPadOS	Affected <18.7.5	Fixed in 18.7.5
ApplemacOS	Affected <26.3	Fixed in 26.3
ApplemacOS	Affected <15.7.4	Fixed in 15.7.4
ApplemacOS	Affected <14.8.4	Fixed in 14.8.4
AppletvOS	Affected <26.3	Fixed in 26.3

AI-suggested

To mitigate CVE-2026-20671, organizations and users should promptly apply the security updates released by Apple for all affected operating systems, including iOS 18.7.5, iPadOS 18.7.5, macOS Sequoia 15.7.4, and others as applicable. Network administrators should monitor and secure network infrastructure to prevent attackers from gaining privileged network positions, employing strong segmentation, encryption, and intrusion detection systems. Use of end-to-end encryption protocols (e.g., TLS 1.3) for sensitive communications can reduce the impact of intercepted traffic. Regularly auditing network devices for vulnerabilities and unauthorized access can help limit exposure. Additionally, organizations should educate users about the risks of connecting to untrusted networks and encourage the use of VPNs to protect data in transit. Implementing network anomaly detection tools can help identify suspicious interception attempts. Finally, maintaining a robust patch management process ensures timely deployment of security fixes across all Apple devices in the environment.

Description

A logic issue was addressed with improved checks. This issue is fixed in iOS 18.7.5 and iPadOS 18.7.5, iOS 26.3 and iPadOS 26.3, macOS Sequoia 15.7.4, macOS Sonoma 14.8.4, macOS Tahoe 26.3, tvOS 26.3, visionOS 26.3, watchOS 26.3. An attacker in a privileged network position may be able to intercept network traffic.

Impact

The primary impact of CVE-2026-20671 is the potential interception of sensitive network traffic, which could lead to the exposure of confidential information such as credentials, personal data, or proprietary communications. While the vulnerability does not allow modification or disruption of data, the confidentiality breach could facilitate further attacks like session hijacking or credential theft if combined with other vulnerabilities. Organizations relying heavily on Apple devices for sensitive communications—such as enterprises, government agencies, and healthcare providers—face increased risk of data leakage if attackers gain privileged network access. The requirement for a privileged network position limits the attack surface to scenarios involving compromised network infrastructure or insider threats. However, given the widespread use of Apple devices globally, the vulnerability poses a notable risk to privacy and data security. The absence of known exploits reduces immediate risk but does not eliminate the potential for future exploitation, especially as attackers develop more sophisticated network interception techniques.

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 3 Apr 2026, 02:59 UTC

Technical details

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