CVE-2026-20700 Vulnerability Analysis & Exploit Details CVE-2026-20700 Vulnerability Scoring 7.8 /10 Very High Risk Highly exploitable, CVE-2026-20700 poses a critical security risk that could lead to severe breaches. Attack Complexity Details Attack Complexity: Low Exploits can be performed without significant complexity or special conditions. Attack Vector: Local Vulnerability requires local system access. Privileges Required: Low Some privileges are necessary to exploit the vulnerability. Scope: Unchanged Exploit remains within the originally vulnerable component. User Interaction: None No user interaction is necessary for exploitation. CVE-2026-20700 Details Status: Analyzed Last updated: 🕑 13 Feb 2026, 14:03 UTC Originally published on: 🕚 11 Feb 2026, 23:16 UTC Time between publication and last update: 1 days CVSS Release: version 3 CVSS3 Source 134c704f-9b21-4f2e-91b3-4a467353bcc0 CVSS3 Type Secondary CVSS3 Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2026-20700 Vulnerability Summary CVE-2026-20700: A memory corruption issue was addressed with improved state management. This issue is fixed in watchOS 26.3, tvOS 26.3, macOS Tahoe 26.3, visionOS 26.3, iOS 26.3 and iPadOS 26.3. An attacker with memory write capability may be able to execute arbitrary code. Apple is aware of a report that this issue may have been exploited in an extremely sophisticated attack against specific targeted individuals on versions of iOS before iOS 26. CVE-2025-14174 and CVE-2025-43529 were also issued in response to this report. Assessing the Risk of CVE-2026-20700 Access Complexity Graph The exploitability of CVE-2026-20700 depends on two key factors: attack complexity (the level of effort required to execute an exploit) and privileges required (the access level an attacker needs). Exploitability Analysis for CVE-2026-20700 CVE-2026-20700 presents an accessible attack vector with minimal effort required. Restricting access controls and implementing security updates are critical to reducing exploitation risks. Understanding AC and PR A lower complexity and fewer privilege requirements make exploitation easier. Security teams should evaluate these aspects to determine the urgency of mitigation strategies, such as patch management and access control policies. Attack Complexity (AC) measures the difficulty in executing an exploit. A high AC means that specific conditions must be met, making an attack more challenging, while a low AC means the vulnerability can be exploited with minimal effort. Privileges Required (PR) determine the level of system access necessary for an attack. Vulnerabilities requiring no privileges are more accessible to attackers, whereas high privilege requirements limit exploitation to authorized users with elevated access. CVSS Score Breakdown Chart Above is the CVSS Sub-score Breakdown for CVE-2026-20700, illustrating how Base, Impact, and Exploitability factors combine to form the overall severity rating. A higher sub-score typically indicates a more severe or easier-to-exploit vulnerability. CIA Impact Analysis Below is the Impact Analysis for CVE-2026-20700, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage. Confidentiality: High Exploiting CVE-2026-20700 can result in unauthorized access to sensitive data, severely compromising data privacy. Integrity: High CVE-2026-20700 could allow unauthorized modifications to data, potentially affecting system reliability and trust. Availability: High CVE-2026-20700 can disrupt system operations, potentially causing complete denial of service (DoS). CVE-2026-20700 References External References https://support.apple.com/en-us/126346 https://support.apple.com/en-us/126348 https://support.apple.com/en-us/126351 https://support.apple.com/en-us/126352 https://support.apple.com/en-us/126353 https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-20700 CWE Common Weakness Enumeration CWE-119 CAPEC Common Attack Pattern Enumeration and Classification Buffer Overflow via Environment Variables CAPEC-10 This attack pattern involves causing a buffer overflow through manipulation of environment variables. Once the adversary finds that they can modify an environment variable, they may try to overflow associated buffers. This attack leverages implicit trust often placed in environment variables. Overflow Buffers CAPEC-100 Buffer Overflow attacks target improper or missing bounds checking on buffer operations, typically triggered by input injected by an adversary. As a consequence, an adversary is able to write past the boundaries of allocated buffer regions in memory, causing a program crash or potentially redirection of execution as per the adversaries' choice. Buffer Manipulation CAPEC-123 An adversary manipulates an application's interaction with a buffer in an attempt to read or modify data they shouldn't have access to. Buffer