CVE-2026-49760

Process crash via oversized integer formatting

Published Jun 10, 2026 · Updated Jun 10, 2026

Stack overflow in affected Erlang/OTP releases allows local users to crash processes that call erl_interface with crafted terms. The ei_s_print_term path sends a hexadecimal rendering of an encoded large integer through vsprintf into a 2,000-byte stack buffer. Exploitation requires a port program, driver, or NIF to pass untrusted or attacker-provoked terms; hexadecimal-only overflow bytes bound the reported impact to a process crash.

CVSS severity6.9
Medium
EPSS probability0.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack overflow in affected Erlang/OTP releases allows local users to crash processes that call erl_interface with crafted terms. The ei_s_print_term path sends a hexadecimal rendering of an encoded large integer through vsprintf into a 2,000-byte stack buffer. Exploitation requires a port program, driver, or NIF to pass untrusted or attacker-provoked terms; hexadecimal-only overflow bytes bound the reported impact to a process crash.

The record

CVE
CVE-2026-49760
Published
Jun 10, 2026
Updated
Jun 10, 2026
Vendor
Erlang
Product
Erlang/OTP
Classifications
CWE-121
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 10, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=17.0 <* changes=[{"at":"27.3.4.13","status":"unaffected"},{"at":"28.5.0.2","status":"unaffected"},{"at":"29.0.2","status":"unaffected"}]
  2. Affected versionversion=3.7.16 <* changes=[{"at":"5.5.2.1","status":"unaffected"},{"at":"5.7.0.1","status":"unaffected"},{"at":"5.8.1","status":"unaffected"}]
  3. Affected versionversion=84adefa331c4159d432d22840663c38f155cd4c1 <0bef277b2d39dc8babb9ceb4f5d0a456f3007111

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Erlang · Erlang/OTPversion=17.0 <* changes=[{"at":"27.3.4.13","status":"unaffected"},{"at":"28.5.0.2","status":"unaffected"},{"at":"29.0.2","status":"unaffected"}]; version=3.7.16 <* changes=[{"at":"5.5.2.1","status":"unaffected"},{"at":"5.7.0.1","status":"unaffected"},{"at":"5.8.1","status":"unaffected"}]; version=84adefa331c4159d432d22840663c38f155cd4c1 <0bef277b2d39dc8babb9ceb4f5d0a456f3007111

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
6.9GitHub Security AdvisoryCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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