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Fencer Vulns
medium 5.3

CVE-2025-48039 json

Unverified Paths can Cause Excessive Use of System Resources

published 2025-09-11 13 mo ago modified 2026-07-24 3 mo ago also EUVD-2025-27678

cvss
5.3
version 4.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 33%
public exploits
0
none known

Summary

Allocation of Resources Without Limits or Throttling vulnerability in Erlang OTP ssh (ssh_sftp modules) allows Excessive Allocation, Resource Leak Exposure. This vulnerability is associated with program files lib/ssh/src/ssh_sftpd.erl.

This issue affects OTP from OTP 17.0 before OTP 28.0.3, OTP 27.3.4.3 and OTP 26.2.5.15, corresponding to ssh from 3.0.1 before 5.3.3, 5.2.11.3 and 5.1.4.12.

Patch / fix

  • Erlang OTP 5.1.4.12, 5.2.11.3, 5.3.3, 26.2.5.15, 27.3.4.3, 28.0.3
  • erlang Debian 12 1:25.2.3+dfsg-1+deb12u4
  • erlang Debian 13 1:27.3.4.1+dfsg-1+deb13u1
  • erlang Debian 14 1:27.3.4.3+dfsg-1

debian advisories DEBIAN-CVE-2025-48039

  • erlang Ubuntu 22.04 LTS 1:24.2.1+dfsg-1ubuntu0.6
  • erlang Ubuntu 24.04 LTS 1:25.3.2.8+dfsg-1ubuntu4.5
  • erlang Ubuntu 25.10 1:27.3.4.1+dfsg-1ubuntu0.1
  • erlang Ubuntu Pro 14.04 LTS 1:16.b.3-dfsg-1ubuntu2.2+esm1
  • erlang Ubuntu Pro 16.04 LTS 1:18.3-dfsg-1ubuntu3.1+esm2
  • erlang Ubuntu Pro 18.04 LTS 1:20.2.2+dfsg-1ubuntu2+esm2
  • erlang Ubuntu Pro 20.04 LTS 1:22.2.7+dfsg-1ubuntu0.5+esm1

ubuntu advisories UBUNTU-CVE-2025-48039

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • erlang SLE Module for Server Applications 15 SP7, openSUSE Leap 15.6 23.3.4.19-150300.3.29.1
  • erlang SLES for SAP applications 16.0, SLES 16.0 27.1.3-160000.3.1
  • erlang26 SLE Module for Server Applications 15 SP7, openSUSE Leap 15.6 26.2.1-150300.7.22.1

suse advisories SUSE-SU-2026:0661-1SUSE-SU-2026:20088-1SUSE-SU-2026:0023-1

  • erlang27 openSUSE Tumbleweed 27.1.3-2.1
  • erlang openSUSE Leap 16.0 27.1.3-160000.3.1

opensuse advisories openSUSE-SU-2026:10947-1openSUSE-SU-2026:20043-1

  • erlang Azure Linux 3.0 26.2.5.15-1
  • erlang CBL-Mariner 2.0 25.3.2.21-4

azure linux advisories AZL-67127AZL-67130

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2025-48039 updated cvss 4.3

erlang: Erlang Excessive Use of System Resources

  • Red Hat OpenStack Platform 16.2 erlang, erlang-ssl, erlang-asn1, erlang-erts, erlang-hipe, erlang-sasl, +15 more Red Hat OpenStack Platform 17.1 erlang-ssl, erlang-asn1, erlang-erts, erlang-sasl, erlang-snmp, erlang-eldap, +13 more Red Hat OpenStack Platform 18.0 erlang
    affected: workaround, no fix available “Users unable to upgrade may disable Erlang SFTP access to mitigate the attack vector or limit the number of max_sessions allowed for sshd to increase the complexity of the attack.”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
13 mo ago

Exploit prediction

0.39% chance of exploitation in the next 30 days, higher than 33% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 4.0 5.3 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
CNA 4.0 5.3 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/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

Affected products

  • Erlang OTP

Classification

Weakness
  • CWE-770 Allocation of Resources Without Limits or Throttling
  • CWE-400 Uncontrolled Resource Consumption

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.