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Fencer Vulns
medium 6.9

CVE-2025-48040 json

Malicious Key Exchange Messages may Lead to Excessive Resource Consumption

published 2025-09-11 13 mo ago modified 2026-07-24 3 mo ago also EUVD-2025-27677

cvss
6.9
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 39%
public exploits
0
none known

Summary

Uncontrolled Resource Consumption vulnerability in Erlang OTP ssh (ssh_sftp modules) allows Excessive Allocation, Flooding. 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-2025-48040

  • 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

ubuntu advisories UBUNTU-CVE-2025-48040

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

  • erlang openSUSE Leap 16.0 27.1.3-160000.3.1

opensuse advisories openSUSE-SU-2026:20043-1

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

azure linux advisories AZL-67278AZL-67293

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-2025-48040 updated cvss 5.3

erlang: Erlang Excessive Resource Consumption

  • 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 “Fix deferred”

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
yes
Technical impact
partial
Assessed
13 mo ago

Exploit prediction

0.45% chance of exploitation in the next 30 days, higher than 39% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 4.0 6.9 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
CNA 4.0 6.9 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/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-400 Uncontrolled Resource Consumption
  • CWE-770 Allocation of Resources Without Limits or Throttling

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.