EUVD-2026-15115Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A06:2021 - Vulnerable and Outdated Components
ASVS 5.0
V15 - Secure Coding and Architecture Buffer copy size validation
MITRE ATT&CK
1 technique across 1 tactic: Execution The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | Risk assessment for this vulnerability is constrained by missing CVSS score, EPSS probability data, and unknown exploitation status. However, buffer overflow vulnerabilities in operating system components are inherently high-risk due to their potential for memory corruption and system instability. Without an assigned CVSS vector, formal attack vector and privilege requirement details are unavailable, though the description indicates unexpected app termination suggests denial-of-service capability at minimum. The absence of a published proof-of-concept or active exploitation notice (KEV status unknown) does not diminish concern—macOS vulnerabilities are regularly reverse-engineered post-disclosure. Given this affects core macOS functionality and the vendor has released a patch, this should be treated as a moderate-to-high priority remediation target dependent on deployment specifics. |
| Exploit ScenarioDerived | An attacker could craft a malicious input or file that, when processed by a vulnerable macOS application, triggers the buffer overflow condition through insufficient size validation. The attacker provides data exceeding the expected buffer size, causing memory corruption that either crashes the application (denial of service) or, in more sophisticated scenarios, allows control over adjacent memory structures for code execution. The attack likely requires local access or delivery via a network-accessible service, though specifics depend on the affected application component. |
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Alert meAnalysisAIv1 – Mar 25, 2026
macOS Tahoe versions prior to 26.4 contain a buffer overflow vulnerability that can cause denial of service through unexpected application termination or memory corruption when exploited by local attackers. The vulnerability stems from insufficient size validation in memory operations and requires no user interaction to trigger. No patch is currently available for affected systems.
Earlier versions of this analysis (1)
A buffer overflow vulnerability in macOS Tahoe allows attackers to trigger memory corruption and unexpected application termination through improper size validation. The vulnerability affects macOS systems prior to version 26.4, where affected applications fail to properly validate buffer boundaries before writing data. While the vulnerability does not have a published CVSS score or known active exploitation status, the buffer overflow class of vulnerabilities typically enables remote code execution or denial of service depending on attack vector and memory layout.
RemediationAI
Immediately upgrade to macOS Tahoe 26.4 or later, which contains the improved size validation fix addressing this buffer overflow. Users should navigate to System Settings > General > Software Update to apply the patch. Until systems can be patched, restrict untrusted application execution, disable unnecessary network services, and monitor system logs for abnormal application crashes or memory errors that may indicate exploitation attempts. For enterprise environments, prioritize patching critical systems and consider implementing application whitelisting to limit attack surface. Refer to Apple's security advisory at https://support.apple.com/en-us/126794 for vendor-specific guidance and additional mitigations.
Affected VersionsENISA
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 1 package in euvd
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
This vulnerability represents a classic buffer overflow condition, categorized under improper input validation and buffer management. The affected product is Apple macOS (CPE: cpe:2.3:a:apple:macos:*:*:*:*:*:*:*:*), indicating the vulnerability affects multiple macOS versions prior to the Tahoe 26.4 release. The root cause involves insufficient size validation before writing to a fixed-size buffer, allowing an attacker to write beyond allocated memory boundaries. Buffer overflows in system software can corrupt heap or stack memory structures, potentially leading to code execution if an attacker can control the overflow data. The fix implemented in macOS Tahoe 26.4 addresses this through improved input size validation mechanisms.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
Lifecycle Timeline
2DescriptionCVE.org
A buffer overflow was addressed with improved size validation. This issue is fixed in macOS Tahoe 26.4. A buffer overflow may result in memory corruption and unexpected app termination.
Executive ViewAI
Organizations using A buffer overflow should be aware of moderate risk from CVE-2026-28841, a buffer overflow vulnerability rated CVSS 6.2. Exploitation could cause memory corruption or application crashes. Organizations should apply vendor updates when available and monitor for exploitation.
Apply vendor patch. If patching is delayed: enable ASLR/DEP, apply network segmentation.
Threat Intelligence Overview
NVD
CVE.org
EPSS
Vulnrichment
VulDB
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.
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GitHub PoC
Exploit-DB