CVE-2025-48038Network attack vectorHinoki check available

Service exhaustion via oversized SFTP file handles

Published Sep 11, 2025 · Updated Sep 11, 2025

Resource exhaustion in the Erlang/OTP ssh SFTP server allows remote authenticated users to impair service stability with oversized handles. The ssh_sftpd handle_op path accepted client-declared file handles longer than the protocol's 256-byte limit across read, write, close, directory, and metadata operations. An authenticated SFTP account and an enabled Erlang SFTP subsystem are required; repeated requests consume CPU and memory without affecting confidentiality or integrity.

CVSS severity5.3
Medium
EPSS probability0.39%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Resource exhaustion in the Erlang/OTP ssh SFTP server allows remote authenticated users to impair service stability with oversized handles. The ssh_sftpd handle_op path accepted client-declared file handles longer than the protocol's 256-byte limit across read, write, close, directory, and metadata operations. An authenticated SFTP account and an enabled Erlang SFTP subsystem are required; repeated requests consume CPU and memory without affecting confidentiality or integrity.

The record

CVE
CVE-2025-48038
Published
Sep 11, 2025
Updated
Sep 11, 2025
Vendor
Erlang
Product
Erlang/OTP
Classifications
CWE-770, CWE-400, T1499.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 11, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 11, 2025Record 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=07b8f441ca711f9812fad9e9115bab3c3aa92f79 <* changes=[{"at":"4e3bf86777ab3db7220c11d8ddabf15970ddd10a","status":"unaffected"},{"at":"f09e0201ff701993dc24a08f15e524daf72db42f","status":"unaffected"}]
  2. Affected versionversion=17.0 <* changes=[{"at":"28.0.3","status":"unaffected"},{"at":"27.3.4.3","status":"unaffected"},{"at":"26.2.5.15","status":"unaffected"}]
  3. Affected versionversion=pkg:otp/[email protected] <pkg:otp/ssh@* changes=[{"at":"pkg:otp/[email protected]","status":"unaffected"},{"at":"pkg:otp/[email protected]","status":"unaffected"},{"at":"pkg:otp/[email protected]","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Erlang · Erlang/OTPversion=07b8f441ca711f9812fad9e9115bab3c3aa92f79 <* changes=[{"at":"4e3bf86777ab3db7220c11d8ddabf15970ddd10a","status":"unaffected"},{"at":"f09e0201ff701993dc24a08f15e524daf72db42f","status":"unaffected"}]; version=17.0 <* changes=[{"at":"28.0.3","status":"unaffected"},{"at":"27.3.4.3","status":"unaffected"},{"at":"26.2.5.15","status":"unaffected"}]; version=pkg:otp/[email protected] <pkg:otp/ssh@* changes=[{"at":"pkg:otp/[email protected]","status":"unaffected"},{"at":"pkg:otp/[email protected]","status":"unaffected"},{"at":"pkg:otp/[email protected]","status":"unaffected"}]

Published CVSS scores

5.3Erlang Ecosystem FoundationCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/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)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-770Allocation of Resources Without Limits or Throttling
CWE-400Uncontrolled Resource Consumption
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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