CVE-2023-29552The Service Location Protocol (SLP, RFC 2608) allows an unauthenticated, remote attacker to register arbitrary services.
Updated under an hour ago ()
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It affects netapp smi-s_provider and 4 other products. Add what you run to find out whether that includes you.
CISA lists it as known exploited since Nov 8, 2023; federal agencies had to remediate by Nov 29, 2023. Treat that date as your deadline.
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The Service Location Protocol (SLP, RFC 2608) allows an unauthenticated, remote attacker to register arbitrary services. This could allow the attacker to use spoofed UDP traffic to conduct a denial-of-service attack with a significant amplification factor.
- CVSS
- 7.5 HIGH (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Added to CISA KEV Nov 8, 2023; federal remediation due Nov 29, 2023Apply mitigations per vendor instructions or disable SLP service or port 427/UDP on all systems running on untrusted networks, including those directly connected to the Internet.
- EPSS (exploitation in the next 30 days)
- 63.98% (percentile 99)
- Assigned by
- mitre
- NVD analysis
- Analyzed
- Record last updated
- Oct 21, 2025
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
netapp smi-s_provider netapp:smi-s_provider | all versions | NVD |
suse manager_server suse:manager_server | all versions | NVD |
suse linux_enterprise_server suse:linux_enterprise_server | 11; 12; 12; 15; 15 | NVD |
vmware esxi vmware:esxi | before 7.0 | NVD |
service_location_protocol_project service_location_protocol service_location_protocol_project:service_location_protocol | all versions | NVD |
References
- https://datatracker.ietf.org/doc/html/rfc2608technical-description
- https://www.bitsight.com/blog/new-high-severity-vulnerability-cve-2023-29552-discovered-service-location-protocol-slpexploit, third-party-advisory
- https://blogs.vmware.com/security/2023/04/vmware-response-to-cve-2023-29552-reflective-denial-of-service-dos-amplification-vulnerability-in-slp.htmlthird-party-advisory
- https://www.cisa.gov/news-events/alerts/2023/04/25/abuse-service-location-protocol-may-lead-dos-attacksthird-party-advisory, us-government-resource
- https://www.suse.com/support/kb/doc/?id=000021051third-party-advisory
- https://curesec.com/blog/article/CVE-2023-29552-Service-Location-Protocol-Denial-of-Service-Amplification-Attack-212.htmlexploit, third-party-advisory
- https://github.com/curesec/slploadproduct
- https://security.netapp.com/advisory/ntap-20230426-0001/third-party-advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-29552us-government-resource
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.