Exploitation evidence
Known exploited · CISA KEV listed
Added 2023-11-08. Ransomware campaign use: Unknown.
CISA required action: 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.
CISA due date: 2023-11-29. This is the catalog’s deadline, not an assessment of your organization’s exposure.
KEV checked 13 Nov 2026, 00:20 Jerusalem · Original catalog ↗Reported products and versions
n/a / n/a
Default status: Not specified
- affected: n/a
Fixes and workarounds
No explicit solution text in the downloaded CVE record. Consult the vendor advisory; unaffected version ranges are shown above as reported, not inferred as a patch recommendation.
Sources and related reporting
CVE Program record ↗ · Download tracked evidence as JSON
- https://datatracker.ietf.org/doc/html/rfc2608
- https://www.bitsight.com/blog/new-high-severity-vulnerability-cve-2023-29552-discovered-service-location-protocol-slp
- https://blogs.vmware.com/security/2023/04/vmware-response-to-cve-2023-29552-reflective-denial-of-service-dos-amplification-vulnerability-in-slp.html
- https://www.cisa.gov/news-events/alerts/2023/04/25/abuse-service-location-protocol-may-lead-dos-attacks
- https://www.suse.com/support/kb/doc/?id=000021051
- https://curesec.com/blog/article/CVE-2023-29552-Service-Location-Protocol-Denial-of-Service-Amplification-Attack-212.html
- https://github.com/curesec/slpload
- https://security.netapp.com/advisory/ntap-20230426-0001/
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-29552
Observed change timeline
History begins when Egret first downloads each source. It is not the complete upstream CVE history.
12 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-12",
"epss": 0.63975,
"percentile": 0.99236
}10 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-10",
"epss": 0.63975,
"percentile": 0.99231
}09 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-09",
"epss": 0.63975,
"percentile": 0.9923
}08 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-08",
"epss": 0.63975,
"percentile": 0.99229
}07 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-07",
"epss": 0.63975,
"percentile": 0.99229
}06 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-06",
"epss": 0.63975,
"percentile": 0.99228
}06 Nov 2026, 06:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-05",
"epss": 0.63975,
"percentile": 0.99227
}04 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-04",
"epss": 0.63975,
"percentile": 0.99226
}04 Nov 2026, 18:20 Jerusalem · CVE Program record changed
Stored CNA snapshot at this observation.
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-02T14:14:38.816Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
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"url": "https://datatracker.ietf.org/doc/html/rfc2608"
},
{
"tags": [
"x_transferred"
],
"url": "https://www.bitsight.com/blog/new-high-severity-vulnerability-cve-2023-29552-discovered-service-location-protocol-slp"
},
{
"tags": [
"x_transferred"
],
"url": "https://blogs.vmware.com/security/2023/04/vmware-response-to-cve-2023-29552-reflective-denial-of-service-dos-amplification-vulnerability-in-slp.html"
},
{
"tags": [
"x_transferred"
],
"url": "https://www.cisa.gov/news-events/alerts/2023/04/25/abuse-service-location-protocol-may-lead-dos-attacks"
},
{
"tags": [
"x_transferred"
],
"url": "https://www.suse.com/support/kb/doc/?id=000021051"
},
{
"tags": [
"x_transferred"
],
"url": "https://curesec.com/blog/article/CVE-2023-29552-Service-Location-Protocol-Denial-of-Service-Amplification-Attack-212.html"
},
{
"tags": [
"x_transferred"
],
"url": "https://github.com/curesec/slpload"
},
{
"tags": [
"x_transferred"
],
"url": "https://security.netapp.com/advisory/ntap-20230426-0001/"
}
],
"title": "CVE Program Container"
},
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
}
},
{
"other": {
"content": {
"id": "CVE-2023-29552",
"options": [
{
"Exploitation": "active"
},
{
"Automatable": "yes"
},
{
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],
"role": "CISA Coordinator",
"timestamp": "2025-01-28T21:15:30.516372Z",
"version": "2.0.3"
},
"type": "ssvc"
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},
{
"other": {
"content": {
"dateAdded": "2023-11-08",
"reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-29552"
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"dateUpdated": "2025-10-21T23:05:48.255Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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{
"tags": [
"government-resource"
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{
"lang": "en",
"time": "2023-11-08T00:00:00.000Z",
"value": "CVE-2023-29552 added to CISA KEV"
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],
"title": "CISA ADP Vulnrichment"
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],
"cna": {
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{
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"vendor": "n/a",
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],
"descriptions": [
{
"lang": "en",
"value": "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."
}
],
"problemTypes": [
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],
"providerMetadata": {
"dateUpdated": "2023-04-26T21:06:12.748Z",
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"references": [
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{
"url": "https://www.bitsight.com/blog/new-high-severity-vulnerability-cve-2023-29552-discovered-service-location-protocol-slp"
},
{
"url": "https://blogs.vmware.com/security/2023/04/vmware-response-to-cve-2023-29552-reflective-denial-of-service-dos-amplification-vulnerability-in-slp.html"
},
{
"url": "https://www.cisa.gov/news-events/alerts/2023/04/25/abuse-service-location-protocol-may-lead-dos-attacks"
},
{
"url": "https://www.suse.com/support/kb/doc/?id=000021051"
},
{
"url": "https://curesec.com/blog/article/CVE-2023-29552-Service-Location-Protocol-Denial-of-Service-Amplification-Attack-212.html"
},
{
"url": "https://github.com/curesec/slpload"
},
{
"url": "https://security.netapp.com/advisory/ntap-20230426-0001/"
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},
"cveMetadata": {
"assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
"assignerShortName": "mitre",
"cveId": "CVE-2023-29552",
"datePublished": "2023-04-25T00:00:00.000Z",
"dateReserved": "2023-04-07T00:00:00.000Z",
"dateUpdated": "2025-10-21T23:05:48.255Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}03 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-03",
"epss": 0.63975,
"percentile": 0.99225
}03 Nov 2026, 02:22 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-02",
"epss": 0.63975,
"percentile": 0.99224
}03 Nov 2026, 02:22 Jerusalem · CISA KEV status changed
Stored KEV snapshot at this observation.
{
"cveID": "CVE-2023-29552",
"cwes": [],
"dateAdded": "2023-11-08",
"dueDate": "2023-11-29",
"forensicTriage": "No",
"knownRansomwareCampaignUse": "Unknown",
"notes": "This vulnerability affects a common open-source component, third-party library, or a protocol used by different products. Please check with specific vendors for information on the patching status. For more information please see https://www.bitsight.com/blog/new-high-severity-vulnerability-cve-2023-29552-discovered-service-location-protocol-slp and https://www.cisa.gov/news-events/alerts/2023/04/25/abuse-service-location-protocol-may-lead-dos-attacks.; https://nvd.nist.gov/vuln/detail/CVE-2023-29552",
"product": "Service Location Protocol (SLP)",
"requiredAction": "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.",
"shortDescription": "The Service Location Protocol (SLP) contains a denial-of-service (DoS) vulnerability that could allow an unauthenticated, remote attacker to register services and use spoofed UDP traffic to conduct a denial-of-service (DoS) attack with a significant amplification factor.",
"vendorProject": "IETF",
"vulnerabilityName": "Service Location Protocol (SLP) Denial-of-Service Vulnerability"
}