Skip to main content

Erlang/OTP EUVDEUVD-2026-36053

| CVE-2026-49759 HIGH
Stack-based Buffer Overflow (CWE-121)
2026-06-10 EEF
Denial Of Service Buffer Overflow Stack Overflow Otp
8.8
CVSS 4.0 · Vendor: EEF
Share

Severity by source

Vendor (EEF) PRIMARY
8.8 HIGH
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
SUSE
7.5 HIGH
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Red Hat
8.2 HIGH
qualitative

Primary rating from Vendor (EEF).

CVSS VectorVendor: EEF

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
X

Lifecycle Timeline

3
Source Code Evidence Fetched
Jun 10, 2026 - 16:33 vuln.today
Analysis Generated
Jun 10, 2026 - 16:33 vuln.today
CVSS changed
Jun 10, 2026 - 16:22 NVD
8.8 (HIGH)

DescriptionCVE.org

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.

AnalysisAI

Denial of service in Erlang/OTP erts (inet_drv SCTP handler) lets unauthenticated remote attackers crash the BEAM VM by sending a single crafted SCTP ERROR chunk to a listening SCTP port. The flaw is a stack-based buffer overflow (CWE-121) in sctp_parse_error_chunk, with the publicly disclosed advisory from the Erlang Ecosystem Foundation (EEF) and an upstream commit confirming the fix; no public exploit identified at time of analysis, and the overflow only permits writing 16-bit values interleaved with a fixed tag, limiting impact to DoS plus minor memory disclosure.

Technical ContextAI

Erlang/OTP is the runtime system powering the BEAM virtual machine used by telecom, messaging, and distributed systems (e.g., RabbitMQ, Ejabberd). The vulnerable code lives in erts/emulator/drivers/common/inet_drv.c, the C-level inet driver bridging BEAM I/O to the OS socket layer. The function sctp_parse_error_chunk iterates over cause codes inside an SCTP ERROR chunk and appends them to a fixed-size stack array of ErlDrvTermData (the spec[] term buffer) without checking that the running index stays within PACKET_ERL_DRV_TERM_DATA_LEN. CWE-121 (Stack-based Buffer Overflow) is the root cause class: the upstream patch (commit 3983d49) threads a spec_size argument through sctp_parse_error_chunk, sctp_parse_async_event, inet_async_binary_data, and packet_binary_message, and introduces a truncation check that stops writing when there is no room for the next worst-case term, emitting a truncation marker instead.

RemediationAI

Vendor-released patches are available: upgrade to Erlang/OTP 27.3.4.13, 28.5.0.2, or 29.0.2 (or later) per the GHSA-6f4f-chj5-5g97 advisory, with the upstream fix in commit 3983d495284331c121f600a80bac9fcf4e16381e. If immediate patching is not possible, the most effective compensating control is to stop listening on SCTP - disable SCTP listeners in application code or block IP protocol 132 at the network edge using stateful firewalls or ACLs on upstream routers; this fully neutralizes the attack surface but will break any service that legitimately relies on SCTP (telecom signaling, M3UA/Diameter gateways, certain WebRTC data channels). Where SCTP must remain enabled, restrict source IPs to known peers via firewall rules and consider terminating SCTP at an intermediate gateway that re-encodes traffic, accepting the latency and operational complexity cost. Monitor BEAM VM crash/restart events as a detection signal until patches are deployed.

More in Otp

View all
CVE-2022-24584 MEDIUM POC
6.5 May 11

Incorrect access control in Yubico OTP functionality of the YubiKey hardware tokens along with the Yubico OTP validation
CVE-2026-55953 CRITICAL
9.1 Jul 27

An on-path attacker can force an Erlang/OTP TLS 1.2 or DTLS client to accept an anonymous cipher suite not offered by th
CVE-2026-55950 HIGH
8.7 Jul 02

Remote denial of service in Erlang/OTP's ssl application (dtls_packet_demux module) lets an unauthenticated attacker cra
CVE-2026-58227 HIGH
8.7 Jul 27

Uncontrolled recursion in the Erlang/OTP ssl application when processing a crafted TLS/DTLS certificate chain allows rem
CVE-2026-59250 HIGH
8.3 Jul 27

We need to output a JSON object based on the CVE-2026-59250 data. We must synthesize from multiple sources: description,
CVE-2026-28808 HIGH
8.3 Apr 07

Authorization bypass in Erlang OTP's inets HTTP server allows unanauthenticated remote attackers to execute CGI scripts

CVE-2026-55952 HIGH
8.2 Jul 02

Denial of service in the Erlang/OTP ssl application (OTP 22.2 through 29.0.3, and the 28.5.x/27.3.x maintenance branches
CVE-2026-32144 HIGH
7.6 Apr 07

Erlang OTP public_key module (versions 1.16 through 1.20.3 and 1.17.1.2) fails to cryptographically verify OCSP responde
CVE-2026-48860 HIGH
7.5 Jun 10

Authentication bypass in Erlang/OTP's TLS distribution module (inet_tls_dist) lets any attacker holding a TLS certificat
CVE-2026-48856 HIGH
7.1 Jun 10

Credential leakage in Erlang/OTP's inets httpc client (versions 17.0 through 29.0.2, 28.5.0.2, and 27.3.4.13) allows att
CVE-2026-23941 HIGH
7.0 Mar 13

A critical HTTP Request Smuggling vulnerability exists in Erlang OTP's inets httpd module that allows attackers to desyn
CVE-2026-23943 MEDIUM
6.9 Mar 13

A remote code execution vulnerability (CVSS 6.9) that allows denial of service. Remediation should follow standard vulne

Same weakness CWE-121 – Stack-based Buffer Overflow

View all
CVE-2025-0282 CRITICAL POC
9.0
CVE-2025-22457 CRITICAL POC
9.8
CVE-2012-10060 CRITICAL POC
9.3
CVE-2012-10053 CRITICAL POC
9.3
CVE-2013-10064 CRITICAL POC
9.3
CVE-2012-10023 MEDIUM POC
6.9
CVE-2012-10058 CRITICAL POC
10.0
CVE-2013-10068 CRITICAL POC
9.4

Same technique Denial Of Service

View all
CVE-2015-5119 CRITICAL POC
9.8
CVE-2011-2462 CRITICAL POC
9.8
CVE-2011-0611 HIGH POC
8.8
CVE-2012-1889 HIGH POC
8.8
CVE-2012-0507 CRITICAL POC
9.8
CVE-2014-1761 HIGH POC
7.8
CVE-2015-5122 CRITICAL POC
9.8
CVE-2011-0609 HIGH POC
7.8

Vendor StatusVendor

SUSE

Severity: Important
Product Status
SUSE Linux Enterprise High Performance Computing 15 SP7 Affected
SUSE Linux Enterprise High Performance Computing 15 SP7 Affected
SUSE Linux Enterprise Module for Server Applications 15 SP7 Affected
SUSE Linux Enterprise Module for Server Applications 15 SP7 Affected
SUSE Linux Enterprise Server 15 SP7 Affected

Share

EUVD-2026-36053 vulnerability details – vuln.today
Back

This site uses cookies essential for authentication and security. No tracking or analytics cookies are used. Privacy Policy