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 27.3.4.13, 28.5.0.2 and 29.0.2, corresponding to erts from 6.0 before 15.2.7.9, 16.4.0.2 and 17.0.2.

An update of the erlang package has been released.

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the d87db2a1-64d4-11f1-ab11-4c526214c986 advisory.

    https://github.com/erlang/otp/security/advisories/GHSA-6f4f-chj5-5g97 reports:
    A buffer overflow error when parsing SCTP ERROR or ABORT               chunks has been fixed. This could lead to stack corruption and               VM crash, but ultimately with hard work by an attacker be               refined into maybe even remote code execution.

Tenable has extracted the preceding description block directly from the FreeBSD security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - 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 27.3.4.13, 28.5.0.2 and 29.0.2, corresponding to erts from 6.0 before 15.2.7.9,     16.4.0.2 and 17.0.2. (CVE-2026-49759)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Severity
323235	Photon OS 4.0: Erlang PHSA-2026-4.0-1038	Nessus	PhotonOS Local Security Checks	high
321790	Photon OS 5.0: Erlang PHSA-2026-5.0-0883	Nessus	PhotonOS Local Security Checks	high
320569	FreeBSD : Erlang/OTP -- buffer overflow parsing SCTP ERROR/ABORT chunks (d87db2a1-64d4-11f1-ab11-4c526214c986)	Nessus	FreeBSD Local Security Checks	high
320499	Linux Distros Unpatched Vulnerability : CVE-2026-49759	Nessus	Misc.	high

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CVE-2026-49759

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