CVE-2025-58477 Overview
CVE-2025-58477 is an out-of-bounds write vulnerability in the libimagecodec.quram.so library used by Samsung Android devices. The flaw resides in the parsing logic for Image File Directory (IFD) tags, a metadata structure used in TIFF and related image formats. Remote attackers can trigger the condition by delivering a crafted image that a user opens or previews, causing the parser to write outside of allocated memory bounds. Samsung addressed the issue in the Samsung Mobile Release (SMR) Dec-2025 Release 1 security update. The vulnerability is tracked as CWE-787: Out-of-bounds Write.
Critical Impact
Remote attackers can access out-of-bounds memory on unpatched Samsung Android devices when a user opens a maliciously crafted image, potentially exposing sensitive process memory.
Affected Products
- Samsung Android 13.0 prior to SMR Dec-2025 Release 1
- Samsung Android 14.0 prior to SMR Dec-2025 Release 1
- Samsung Android 15.0 and 16.0 prior to SMR Dec-2025 Release 1 (devices shipping the vulnerable libimagecodec.quram.so)
Discovery Timeline
- 2025-12-02 - CVE-2025-58477 published to NVD
- December 2025 - Samsung releases SMR Dec-2025 Release 1 security patch
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2025-58477
Vulnerability Analysis
The vulnerability resides in libimagecodec.quram.so, a proprietary image decoding library from Quramsoft that Samsung ships on its Android devices. The parser writes past the end of a buffer when handling IFD tags embedded in image metadata. IFD structures originate from the TIFF specification and are reused in formats such as EXIF metadata inside JPEG and DNG files. The out-of-bounds write occurs during network-delivered content processing and requires user interaction to open or preview the malicious file. Successful exploitation permits an attacker to corrupt memory adjacent to the parser's buffers, which in this case is scoped to confidentiality impact according to the reported metrics.
Root Cause
The root cause is insufficient validation of length or offset fields associated with an IFD tag entry. When the parser trusts attacker-controlled values from the image header, it computes a destination address or copy length that exceeds the allocated buffer. This class of defect is categorized under CWE-787: Out-of-bounds Write. The absence of proper bounds checks in the tag-parsing routine allows the write primitive to reach adjacent memory.
Attack Vector
Exploitation is remote and requires user interaction. An attacker delivers a crafted image through channels such as messaging applications, email attachments, MMS, or web content. When the target opens or previews the image using a component that invokes libimagecodec.quram.so, the malformed IFD tag is parsed and triggers the out-of-bounds write. No elevated privileges are required to initiate the attack.
No verified proof-of-concept code is publicly available. See the Samsung Mobile Security Update for vendor-authoritative technical details.
Detection Methods for CVE-2025-58477
Indicators of Compromise
- Unexpected crashes or tombstones in processes that link libimagecodec.quram.so when handling images from untrusted sources.
- Delivery of image files with malformed EXIF or TIFF IFD structures via messaging, email, or web downloads.
- Anomalous native memory corruption signals logged by Android's logcat referencing the Quram codec.
Detection Strategies
- Monitor mobile device management (MDM) telemetry for Samsung devices running builds prior to SMR Dec-2025 Release 1.
- Inspect email and messaging gateways for image attachments containing malformed IFD offsets or oversized tag counts.
- Correlate application crash reports referencing native image decoding libraries with recent inbound file transfers.
Monitoring Recommendations
- Track patch level compliance across the mobile fleet and flag devices missing the December 2025 Samsung SMR update.
- Ingest mobile crash and security event logs into a central data lake for correlation with threat intelligence on image-parsing exploits.
- Alert on repeated delivery of image files to a single user from unknown senders, especially with unusual metadata sizes.
How to Mitigate CVE-2025-58477
Immediate Actions Required
- Apply the Samsung SMR Dec-2025 Release 1 security update to all affected Samsung Android 13, 14, 15, and 16 devices.
- Enforce patch compliance policies through MDM to block or quarantine devices that have not received the December 2025 update.
- Warn users against opening image attachments from untrusted senders until the patch is applied.
Patch Information
Samsung addressed CVE-2025-58477 in the SMR Dec-2025 Release 1 monthly security update. Patch details and device availability are published on the Samsung Mobile Security Update portal. Users should navigate to Settings > Software update > Download and install to retrieve the fix once it is available for their model and carrier.
Workarounds
- Restrict automatic image preview and download in messaging applications where feasible.
- Filter inbound image attachments through server-side scanners that reject malformed TIFF or EXIF structures.
- Limit exposure of high-risk users to unsolicited image content until the SMR Dec-2025 Release 1 update is installed.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
