Cve-2026-25205 — CraftedSignal Threat Feedhttps://feed.craftedsignal.io/tags/cve-2026-25205/Trending threats, MITRE ATT&CK coverage, and detection metadata — refreshed continuously.Hugoenhello@craftedsignal.iohello@craftedsignal.ioMon, 13 Apr 2026 05:16:02 +0000Samsung Escargot Heap-Based Buffer Overflow Vulnerability (CVE-2026-25205)https://feed.craftedsignal.io/briefs/2026-04-escargot-overflow/Mon, 13 Apr 2026 05:16:02 +0000hello@craftedsignal.iohttps://feed.craftedsignal.io/briefs/2026-04-escargot-overflow/A heap-based buffer overflow vulnerability in Samsung Open Source Escargot (CVE-2026-25205) allows for out-of-bounds write operations, potentially leading to arbitrary code execution.A heap-based buffer overflow vulnerability, identified as CVE-2026-25205, has been discovered in Samsung Open Source Escargot. This flaw allows an attacker to perform out-of-bounds write operations due to insufficient bounds checking. The specific version affected is identified by commit hash 97e8115ab1110bc502b4b5e4a0c689a71520d335. Successful exploitation of this vulnerability could lead to arbitrary code execution, denial of service, or information disclosure. Given the potential impact and the lack of readily available patches, organizations using affected versions of Escargot should take immediate steps to mitigate this risk.

Attack Chain

  1. The attacker identifies a vulnerable instance of Samsung Open Source Escargot running commit hash 97e8115ab1110bc502b4b5e4a0c689a71520d335.
  2. The attacker crafts a malicious input that triggers the heap-based buffer overflow within Escargot.
  3. The vulnerable function in Escargot attempts to write data beyond the allocated buffer on the heap.
  4. The out-of-bounds write corrupts adjacent memory regions on the heap, potentially overwriting critical data structures or function pointers.
  5. The attacker carefully controls the overwritten data to redirect execution flow to a location of their choosing.
  6. The attacker injects malicious code into the heap and overwrites a function pointer to point to this code.
  7. When the overwritten function pointer is called, the attacker’s code is executed with the privileges of the Escargot process.
  8. The attacker gains control of the system and can perform actions such as installing malware, stealing sensitive data, or disrupting services.

Impact

Successful exploitation of CVE-2026-25205 can lead to a range of negative consequences. An attacker could achieve arbitrary code execution on the affected system, potentially compromising the entire device. This could allow for the installation of persistent backdoors, the theft of sensitive user data, or the complete disruption of service. Given the lack of specific victim data, the impact is assessed as high, especially for systems running Escargot in critical infrastructure or sensitive environments.

Recommendation

  • Review the pull request at https://github.com/Samsung/escargot/pull/1554 to understand the nature of the vulnerability and potential fixes.
  • Implement input validation and sanitization techniques to prevent malicious input from triggering the buffer overflow.
  • Monitor systems running Samsung Open Source Escargot for unexpected crashes or error messages that may indicate exploitation attempts.
  • Deploy the Sigma rule below to detect potential exploitation attempts based on anomalous process behavior.
]]>highadvisorycve-2026-25205heap-based buffer overflowescargot