How severe is CVE-2025-32433?

CVE-2025-32433 has a CVSS 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-32433 being actively exploited?

Yes. CVE-2025-32433 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2025-06-09, which means active exploitation has been confirmed. It should be prioritised for remediation.

What products are affected by CVE-2025-32433?

CVE-2025-32433 primarily affects Erlang Erlang/otp. In total, 23 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-32433?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.

Does CVE-2025-32433 have an EU (EUVD) identifier?

Yes. CVE-2025-32433 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-11793. It is also flagged as exploited in the EUVD (since 2025-06-09).

When was CVE-2025-32433 published?

CVE-2025-32433 was published on 2025-04-16 and last updated on 2026-06-17.

CVE-2025-32433

CVE-2025-32433 is a critical-severity vulnerability in Erlang Erlang/otp with a CVSS 3.x base score of 10.0. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2025-06-09). The underlying weakness is classified as CWE-306.

Key facts

Severity: Critical (CVSS 3.x base score 10.0)
EPSS exploit prediction: 98% (100th percentile)
Actively exploited: Yes — listed in CISA KEV (added 2025-06-09)
EU (EUVD) id: EUVD-2025-11793
EU exploitation: Flagged exploited in the ENISA EU Vulnerability Database (since 2025-06-09)
Weakness: CWE-306
Affected product: Erlang Erlang/otp
Published: 2025-04-16
Last modified: 2026-06-17

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.

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 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-32433 being actively exploited?: Yes. CVE-2025-32433 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2025-06-09, which means active exploitation has been confirmed. It should be prioritised for remediation.
What products are affected by CVE-2025-32433?: CVE-2025-32433 primarily affects Erlang Erlang/otp. In total, 23 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-32433?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.
Does CVE-2025-32433 have an EU (EUVD) identifier?: Yes. CVE-2025-32433 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-11793. It is also flagged as exploited in the EUVD (since 2025-06-09).
When was CVE-2025-32433 published?: CVE-2025-32433 was published on 2025-04-16 and last updated on 2026-06-17.

References

Affected products (23)

cpe:2.3:a:erlang:erlang\/otp:*:*:*:*:*:*:*:*
cpe:2.3:a:cisco:confd_basic:*:*:*:*:*:*:*:*
cpe:2.3:a:cisco:network_services_orchestrator:*:*:*:*:*:*:*:*
cpe:2.3:a:cisco:cloud_native_broadband_network_gateway:*:*:*:*:*:*:*:*
cpe:2.3:a:cisco:inode_manager:-:*:*:*:*:*:*:*
cpe:2.3:a:cisco:smart_phy:*:*:*:*:*:*:*:*
cpe:2.3:a:cisco:ultra_packet_core:*:*:*:*:*:*:*:*
cpe:2.3:a:cisco:ultra_services_platform:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:staros:*:*:*:*:*:*:*:*
cpe:2.3:a:cisco:optical_site_manager:*:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ncs_2000_shelf_virtualization_orchestrator_firmware:*:*:*:*:*:*:*:*
cpe:2.3:a:cisco:enterprise_nfv_infrastructure_software:*:*:*:*:*:*:*:*
cpe:2.3:a:cisco:ultra_cloud_core:*:*:*:*:*:*:*:*
cpe:2.3:o:cisco:rv160w_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:rv260_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:rv160_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:rv260p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:rv260w_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:rv340_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:rv340w_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:rv345_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:rv345p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*

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