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CVE-2026-49760

25
FAUCET Score

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 29.0.2, OTP 28.5.0.2 and OTP 27.3.4.13, corresponding to erl_interface from 3.7.16 before 5.8.1, 5.7.0.1 and 5.5.2.1.

First published: Jun 10, 2026Last modified: Jul 24, 2026

Impacted Technologies

VendorProductVersion(s)CPE
>= 3.7.16, < 5.5.2.1CPE matchmatch criteria
cpe:2.3:a:erlang:erl_interface:*:*:*:*:*:*:*:*
>= 5.7, < 5.7.0.1CPE matchmatch criteria
cpe:2.3:a:erlang:erl_interface:*:*:*:*:*:*:*:*
>= 5.8, < 5.8.1CPE matchmatch criteria
cpe:2.3:a:erlang:erl_interface:*:*:*:*:*:*:*:*
>= 17.0, < 27.3.4.13CPE matchmatch criteria
cpe:2.3:a:erlang:erlang\/otp:*:*:*:*:*:*:*:*
>= 28.0, < 28.5.0.2CPE matchmatch criteria
cpe:2.3:a:erlang:erlang\/otp:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 4.0

6.9MEDIUM

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/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
LOCAL
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
VS Confidentiality
NONE
VS Integrity
NONE
VS Availability
HIGH
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.14%
Probability of exploitation in next 30 days
EPSS Percentile
3.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0014 is in the 22nd percentile among its peer group of 15,938 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

github_advisorypatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: azl3 erlang 26.2.5.20-1 on Azure Linux 3.0Fixed in: 26.2.5.21-2
microsoftpatch availablevia msrc
Product: 21268-17084Fixed in: 26.2.5.21-2

Vendor Advisories (1)

microsoft2026-Jun/CVE-2026-49760Moderate

Stack Buffer Overflow in ei_s_print_term at Very Large Integer

Jun 9, 2026

References

cna.erlef.org / cves/CVE-2026-49760.html
MitigationThird Party Advisory
github.com / erlang/otp/commit/0bef277b2d39dc8babb9ceb4f5d0a456f3007111
Patch
github.com / erlang/otp/security/advisories/GHSA-xcxj-5pg2-v72j
MitigationVendor Advisory
osv.dev / vulnerability/EEF-CVE-2026-49760
MitigationThird Party Advisory
erlang.org / doc/system/versions.html
Product