---
id: CVE-2026-49760
title: >-
  Stack-based Buffer Overflow vulnerability in Erlang OTP (erl_interface) allows
  Stack-based Buffer Overflow.


  This vulnerability is associated with program file
  lib/erl_interface/src/misc/ei_printterm.c and program routine ei_s_print_term…
summary: >-
  Stack-based Buffer Overflow vulnerability in Erlang OTP (erl_interface) allows
  Stack-based Buffer Overflow.


  This vulnerability is associated with program file
  lib/erl_interface/src/misc/ei_printterm.c and program routine ei_s_print_term…
severity: medium
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-121
vendor: erlang
product: erl_interface
affected:
  - 'erl_interface >= 3.7.16, < 5.5.2.1'
  - 'erl_interface >= 5.7, < 5.7.0.1'
  - 'erl_interface >= 5.8, < 5.8.1'
  - 'erlang/otp >= 17.0, < 27.3.4.13'
  - 'erlang/otp >= 28.0, < 28.5.0.2'
  - 'erlang/otp >= 29.0, < 29.0.2'
patched:
  - erl_interface 5.8.1
  - erlang/otp 29.0.2
published: '2026-06-10'
updated: '2026-09-24'
sourceUpdated: '2026-09-24T21:17:15.130'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-49760'
references:
  - url: 'https://cna.erlef.org/cves/CVE-2026-49760.html'
    label: 6b3ad84c-e1a6-4bf7-a703-f496b71e49db
  - url: >-
      https://github.com/erlang/otp/commit/0bef277b2d39dc8babb9ceb4f5d0a456f3007111
    label: 6b3ad84c-e1a6-4bf7-a703-f496b71e49db
  - url: 'https://github.com/erlang/otp/security/advisories/GHSA-xcxj-5pg2-v72j'
    label: 6b3ad84c-e1a6-4bf7-a703-f496b71e49db
  - url: 'https://osv.dev/vulnerability/EEF-CVE-2026-49760'
    label: 6b3ad84c-e1a6-4bf7-a703-f496b71e49db
  - url: 'https://www.erlang.org/doc/system/versions.html#order-of-versions'
    label: 6b3ad84c-e1a6-4bf7-a703-f496b71e49db
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-06-10T16:16:14.697009Z'
scores:
  nvd: 5.5
  cna: 6.9
epss: 0.0019
epssPercentile: 0.0764
ingestedAt: '2026-09-24T20:51:40.265Z'
---

## Overview

Stack-based Buffer Overflow vulnerability in Erlang OTP (erl_interface) allows Stack-based Buffer Overflow.

This vulnerability is associated with program file lib/erl_interface/src/misc/ei_printterm.c and program routine ei_s_print_term.

The C function ei_s_print_term uses an internal 2000-character stack buffer to format terms. When called with an encoded Erlang term containing a very large integer (encoded representation exceeding 2000 characters), the buffer overflows. The overflow bytes are restricted to the ASCII values of 0-9 and A-F, which limits exploitation to Denial of Service.

The companion function ei_print_term, which prints directly to a FILE instead of a memory buffer, does not contain this bug.

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 erl_interface from 3.7.16 before 5.5.2.1, 5.7.0.1, and 5.8.1. Whether OTP before OTP 17.0, corresponding to erl_interface before 3.7.16, is affected is unknown.

## Affected

- `erl_interface >= 3.7.16, < 5.5.2.1`
- `erl_interface >= 5.7, < 5.7.0.1`
- `erl_interface >= 5.8, < 5.8.1`
- `erlang/otp >= 17.0, < 27.3.4.13`
- `erlang/otp >= 28.0, < 28.5.0.2`
- `erlang/otp >= 29.0, < 29.0.2`

## Remediation

Upgrade past the affected range:

- `erl_interface 5.8.1`
- `erlang/otp 29.0.2`