CVE-2023-29552The Service Location Protocol (SLP, RFC 2608) allows an unauthenticated, remote attacker to register arbitrary services. This could allow…
- 7.5HighCVSS base score
- 64.0%Exploitation in 30 daysEPSS · top 0.8% of all CVEs
- YesKnown exploitedin CISA's KEV since 8 Nov 2023
- YesPublic exploitsa reference or SSVC says so
Description
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.
Exploited in the wild
CISA lists this vulnerability in its Known Exploited Vulnerabilities catalog as Service Location Protocol (SLP) Denial-of-Service Vulnerability.
- Added
- 8 Nov 2023
- Fix due (US federal)
- 29 Nov 2023
- Used by ransomware
- Not known
Apply 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.
ENISA's EU Vulnerability Database lists it as exploited, from CISA's KEV, since 8 Nov 2023.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. CISA's SSVC rates its exploitation: it is being exploited.
Timeline
ID reserved
By mitre
- 18 days later
· 18 days later
Published
- 7 months later
· 7 months later
Added to CISA KEV
Known exploited in the wild
- 24 months later
· 24 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVDNVD · Analyzed | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 64.0% · top 0.8% of all CVEs (12 Nov 2026)
- CISA SSVC
- Exploitation: active · Automatable: yes · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Affected products
n/a
- affected n/a
References
References9
- https://datatracker.ietf.org/doc/html/rfc2608 (opens in a new tab)x_transferred
- https://www.bitsight.com/blog/new-high-severity-vulnerability-cve-2023-29552-discovered-service-location-protocol-slp (opens in a new tab)x_transferred
- https://blogs.vmware.com/security/2023/04/vmware-response-to-cve-2023-29552-reflective-denial-of-service-dos-amplification-vulnerability-in-slp.html (opens in a new tab)x_transferred
- https://www.cisa.gov/news-events/alerts/2023/04/25/abuse-service-location-protocol-may-lead-dos-attacks (opens in a new tab)x_transferred
- https://www.suse.com/support/kb/doc/?id=000021051 (opens in a new tab)x_transferred
- https://curesec.com/blog/article/CVE-2023-29552-Service-Location-Protocol-Denial-of-Service-Amplification-Attack-212.html (opens in a new tab)x_transferred
- https://github.com/curesec/slpload (opens in a new tab)x_transferred
- https://security.netapp.com/advisory/ntap-20230426-0001/ (opens in a new tab)x_transferred
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-29552 (opens in a new tab)government-resource
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- CISA KEV catalog (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2023-33094 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2023-29552)Record last updated .