CVE-2026-49759 Affecting erlang-epmd package, versions <23.3.4.19-150300.3.39.1


Severity

Recommended
0.0
high
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.5% (41st percentile)

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  • Snyk IDSNYK-SLES155-ERLANGEPMD-19165660
  • published22 Aug 2026
  • disclosed18 Aug 2026

Introduced: 18 Aug 2026

CVE-2026-49759  (opens in a new tab)

How to fix?

Upgrade SLES:15.5 erlang-epmd to version 23.3.4.19-150300.3.39.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream erlang-epmd package and not the erlang-epmd package as distributed by SLES. See How to fix? for SLES:15.5 relevant fixed versions and status.

Stack-based Buffer Overflow vulnerability in Erlang OTP erts (inet_drv) allows an unauthenticated remote attacker to crash the BEAM VM by sending a crafted SCTP ERROR chunk.

The sctp_parse_error_chunk function in erts/emulator/drivers/common/inet_drv.c parses SCTP ERROR chunks and writes cause codes into a fixed-size stack-allocated ErlDrvTermData spec[] array without checking bounds. A remote attacker who has established an SCTP association to a listening port can send a single crafted SCTP ERROR chunk containing enough cause codes to overflow the stack buffer, crashing the VM. The attacker can only write 16-bit values interleaved with a fixed tag, so the overflow does not provide a controlled return address, limiting exploitation to Denial of Service.

A crafted SCTP ERROR chunk may also leak bits and pieces of Erlang VM memory into the received error packet observed by the Erlang process. Such data is already readable by the user running the Erlang VM, so the disclosure scope is limited.

This issue affects OTP from OTP 17.0 before OTP 27.3.4.13, OTP 28.5.0.2, and OTP 29.0.2, corresponding to erts from 6.0 before 15.2.7.9, 16.4.0.2, and 17.0.2. Whether OTP before OTP 17.0, corresponding to erts before 6.0, is affected is unknown.

CVSS Base Scores

version 3.1