EUVD-2026-44654
GHSA-p5fp-xrqh-wqj4
Severity by source
AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
OOB read in codec triggered by opening a crafted image (UI:R); read-primitive can leak memory (C:L); no integrity impact; local vector retained per description.
Primary rating from Vendor (huawei).
CVSS VectorVendor: huawei
Lifecycle Timeline
1DescriptionCVE.org
Out-of-bounds read vulnerability in the image codec module. Impact: Successful exploitation of this vulnerability may affect service confidentiality.
AnalysisAI
Out-of-bounds read in HarmonyOS's image codec module can be triggered locally, with potential impact to service confidentiality and availability. Huawei disclosed this via its July 2026 security bulletin family covering consumer devices, vision products, wearables, and laptops - indicating broad exposure across the HarmonyOS device ecosystem. No public exploit code has been identified at time of analysis, and the vulnerability is not listed in CISA's KEV catalog.
Technical ContextAI
The affected component is the image codec module within HarmonyOS (CPE: cpe:2.3:a:huawei:harmonyos:*:*:*:*:*:*:*:*). CWE-120 describes 'Classic Buffer Overflow' - a condition where a buffer copy operation does not validate input size, potentially writing or reading beyond allocated memory boundaries. The CVE description specifically names an out-of-bounds read, which in codec contexts typically occurs during parsing of malformed image file headers or data streams, where the parser reads past the end of an allocated buffer. This class of bug in media-parsing code can expose adjacent heap memory contents (confidentiality) or trigger a null/invalid dereference that crashes the decoding service (availability). Note a minor taxonomy inconsistency: CWE-120 (buffer copy) is slightly misaligned with an out-of-bounds read; CWE-125 would be the canonical classification - but the practical behavior is consistent with buffer mismanagement during codec parsing.
RemediationAI
The primary remediation is to apply the patches detailed in Huawei's July 2026 security bulletins. Users should visit the applicable bulletin for their device category: smartphones at https://consumer.huawei.com/en/support/bulletin/2026/7/, smart displays and vision products at https://consumer.huawei.com/en/support/bulletinvision/2026/7/, wearables at https://consumer.huawei.com/en/support/bulletinwearables/2026/7/, and laptops at https://consumer.huawei.com/en/support/bulletinlaptops/2026/7/. An exact patched version number is not independently confirmable from the currently available data - the bulletins themselves must be reviewed for specific fixed-version guidance. As a compensating control where patching is delayed, restricting untrusted image content from being processed by affected devices (e.g., via MDM policy limiting media sources or disabling third-party image gallery applications) can reduce the attack surface, with the trade-off of reduced functionality.
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Same weakness CWE-120 – Classic Buffer Overflow
View allSame technique Buffer Overflow
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External POC / Exploit Code
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