CVE-2025-26618 (GCVE-0-2025-26618)

Vulnerability from cvelistv5 – Published: 2025-02-20 19:04 – Updated: 2025-11-03 19:45
VLAI
Title
SSH SFTP packet size not verified properly in Erlang OTP
Summary
Erlang is a programming language and runtime system for building massively scalable soft real-time systems with requirements on high availability. OTP is a set of Erlang libraries, which consists of the Erlang runtime system, a number of ready-to-use components mainly written in Erlang. Packet size is not verified properly for SFTP packets. As a result when multiple SSH packets (conforming to max SSH packet size) are received by ssh, they might be combined into an SFTP packet which will exceed the max allowed packet size and potentially cause large amount of memory to be allocated. Note that situation described above can only happen for successfully authenticated users after completing the SSH handshake. This issue has been patched in OTP versions 27.2.4, 26.2.5.9, and 25.3.2.18. There are no known workarounds for this vulnerability.
Severity
7 (High)
CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-02-20 20:55 UTC
CWE
  • CWE-789 - Memory Allocation with Excessive Size Value
Assigner
GitHub_M CNA
References
Impacted products
Vendor Product Version
erlang otp Affected: >= OTP-27.0.0, < OTP-27.2.4
Affected: >= OTP-26.0.0.0, < OTP-26.2.5.9
Affected: < OTP-25.3.2.18
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