Vulnerability in Erlang Otp
CVE-2025-26618
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.
EPSS: 0.005 (38.7th percentile) — read the EPSS interpretation.
Affected products
- Erlang Otp — versions >= OTP-27.0.0, < OTP-27.2.4, >= OTP-26.0.0.0, < OTP-26.2.5.9, < OTP-25.3.2.18
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-advisories@github.com (x_refsource_CONFIRM)
- security-advisories@github.com (x_refsource_MISC)
- af854a3a-2127-422b-91ae-364da2661108
- 134c704f-9b21-4f2e-91b3-4a467353bcc0
Frequently asked questions
- What is CVE-2025-26618?
- CVE-2025-26618 is a vulnerability in Erlang Otp, classified under CWE-789. Published 2025-02-20.
- Is CVE-2025-26618 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.