Strix
26.1K

CVE-2025-32433

CRITICALCVSS 10/10Actively ExploitedEPSS 97.67%

Last modified

CVE-2025-32433 is a critical-severity vulnerability rated 10/10 on the CVSS scale. Erlang/OTP is a set of libraries for the Erlang programming language. Prior to versions OTP-27.3.3, OTP-26.2.5.11, and OTP-25.3.2.20, a SSH server may allow an attacker to perform unauthenticated remote code execution (RCE). CISA has confirmed active exploitation in the wild. EPSS estimates a 97.67% chance of exploitation in the next 30 days.

Description

Erlang/OTP is a set of libraries for the Erlang programming language. Prior to versions OTP-27.3.3, OTP-26.2.5.11, and OTP-25.3.2.20, a SSH server may allow an attacker to perform unauthenticated remote code execution (RCE). By exploiting a flaw in SSH protocol message handling, a malicious actor could gain unauthorized access to affected systems and execute arbitrary commands without valid credentials. This issue is patched in versions OTP-27.3.3, OTP-26.2.5.11, and OTP-25.3.2.20. A temporary workaround involves disabling the SSH server or to prevent access via firewall rules.

Metrics

CVSS 3.1
10/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

EPSS Probability
97.67%

99.9th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by .

Weakness Enumeration

Affected Software

VendorProductVersions
ErlangErlang\/Otp< 25.3.2.20
ErlangErlang\/Otp>= 26.0, < 26.2.5.11
ErlangErlang\/Otp>= 27.0, < 27.3.3
CiscoConfd Basic< 7.7.19.1
CiscoConfd Basic>= 8.0.18, < 8.1.16.2
CiscoConfd Basic>= 8.2, < 8.2.11.1
CiscoConfd Basic>= 8.3, < 8.3.8.1
CiscoConfd Basic>= 8.4, < 8.4.4.1
CiscoNetwork Services Orchestrator< 5.7.19.1
CiscoNetwork Services Orchestrator>= 5.8, < 6.1.16.2
CiscoNetwork Services Orchestrator>= 6.2, < 6.2.11.1
CiscoNetwork Services Orchestrator>= 6.3, < 6.3.8.1
CiscoNetwork Services Orchestrator>= 6.4, < 6.4.1.1
CiscoNetwork Services Orchestrator>= 6.4.2, < 6.4.4.1
CiscoCloud Native Broadband Network Gateway< 2025.03.1
CiscoInode ManagerAll versions
CiscoSmart Phy< 25.2
CiscoUltra Packet Core< 2025.03
CiscoUltra Services PlatformAll versions
CiscoStaros< 2025.03
CiscoOptical Site Manager< 25.2.1
CiscoNcs 2000 Shelf Virtualization Orchestrator Firmware< 25.1.1
CiscoEnterprise Nfv Infrastructure Software< 4.18
CiscoUltra Cloud Core< 2025.03.1
CiscoRv160w FirmwareAll versions
CiscoRv260 FirmwareAll versions
CiscoRv160 FirmwareAll versions
CiscoRv260p FirmwareAll versions
CiscoRv260w FirmwareAll versions
CiscoRv340 FirmwareAll versions
CiscoRv340w FirmwareAll versions
CiscoRv345 FirmwareAll versions
CiscoRv345p FirmwareAll versions
DebianDebian Linux11.0

References

Timeline

Published
Last Modified
Status
Analyzed

Frequently Asked Questions

What is CVE-2025-32433?
Erlang/OTP is a set of libraries for the Erlang programming language. Prior to versions OTP-27.3.3, OTP-26.2.5.11, and OTP-25.3.2.20, a SSH server may allow an attacker to perform unauthenticated remote code execution (RCE). By exploiting a flaw in SSH protocol message handling, a malicious actor could gain unauthorized access to affected systems and execute arbitrary commands without valid credentials. This issue is patched in versions OTP-27.3.3, OTP-26.2.5.11, and OTP-25.3.2.20. A temporary workaround involves disabling the SSH server or to prevent access via firewall rules.
How severe is CVE-2025-32433?
CVE-2025-32433 has a CVSS score of 10/10 (CRITICAL severity). The EPSS model estimates a 97.67% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.
How do I fix CVE-2025-32433?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-32433?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST