CVE-2026-93962 (GCVE-0-2026-93962)
Vulnerability from cvelistv5 – Published: 2026-09-20 05:00 – Updated: 2026-09-20 05:00 X_Open Source
VLAI
EPSS
VEX
Title
Kamailio CDP Diameter Receiver receiver.c shm_malloc heap-based overflow
Summary
A weakness has been identified in Kamailio up to 5.8.8/6.0.7/6.1.4/6.2.0-dev1. The impacted element is the function shm_malloc of the file src/modules/cdp/receiver.c of the component CDP Diameter Receiver. Executing a manipulation can lead to heap-based buffer overflow. It is possible to launch the attack remotely. The exploit has been made available to the public and could be used for attacks. Upgrading to version 6.0.8 is sufficient to resolve this issue. This patch is called 38711a3e788de0130d48cb485578c482b57d9351/4f62235b6f477b649c5cc18b0c81b4e26c949b98/4f62235b6f477b649c5cc18b0c81b4e26c949b98. You should upgrade the affected component.
Severity
Assigner
References
9 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/407921 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/407921/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-93962 | third-party-advisory |
| https://vuldb.com/submit/944244 | third-party-advisory |
| https://github.com/kamailio/kamailio/issues/4876 | exploitissue-tracking |
| https://github.com/kamailio/kamailio/pull/4877 | issue-trackingpatch |
| https://github.com/kamailio/kamailio/commit/38711… | patch |
| https://github.com/kamailio/kamailio/releases/tag/6.0.8 | patch |
| https://github.com/kamailio/kamailio/ | product |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| n/a | Kamailio |
Affected:
5.8.0
Affected: 5.8.1 Affected: 5.8.2 Affected: 5.8.3 Affected: 5.8.4 Affected: 5.8.5 Affected: 5.8.6 Affected: 5.8.7 Affected: 5.8.8 Affected: 6.0.0 Affected: 6.0.1 Affected: 6.0.2 Affected: 6.0.3 Affected: 6.0.4 Affected: 6.0.5 Affected: 6.0.6 Affected: 6.0.7 Affected: 6.1.0 Affected: 6.1.1 Affected: 6.1.2 Affected: 6.1.3 Affected: 6.1.4 Affected: 6.2.0-dev1 Unaffected: 6.0.8 cpe:2.3:a:kamailio:kamailio:*:*:*:*:*:*:*:* |
{
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"product": "Kamailio",
"vendor": "n/a",
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{
"status": "affected",
"version": "6.0.0"
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"version": "6.0.1"
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"status": "affected",
"version": "6.0.2"
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{
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"version": "6.0.3"
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{
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{
"status": "affected",
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{
"status": "affected",
"version": "6.1.3"
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{
"status": "affected",
"version": "6.1.4"
},
{
"status": "affected",
"version": "6.2.0-dev1"
},
{
"status": "unaffected",
"version": "6.0.8"
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"credits": [
{
"lang": "en",
"type": "reporter",
"value": "WeiYi (VulDB User)"
}
],
"descriptions": [
{
"lang": "en",
"value": "A weakness has been identified in Kamailio up to 5.8.8/6.0.7/6.1.4/6.2.0-dev1. The impacted element is the function shm_malloc of the file src/modules/cdp/receiver.c of the component CDP Diameter Receiver. Executing a manipulation can lead to heap-based buffer overflow. It is possible to launch the attack remotely. The exploit has been made available to the public and could be used for attacks. Upgrading to version 6.0.8 is sufficient to resolve this issue. This patch is called 38711a3e788de0130d48cb485578c482b57d9351/4f62235b6f477b649c5cc18b0c81b4e26c949b98/4f62235b6f477b649c5cc18b0c81b4e26c949b98. You should upgrade the affected component."
}
],
"metrics": [
{
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"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:P",
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}
},
{
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"baseSeverity": "HIGH",
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}
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"version": "2.0"
}
}
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},
{
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{
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"description": "Memory Corruption",
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}
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}
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"providerMetadata": {
"dateUpdated": "2026-09-20T05:00:11.659Z",
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"shortName": "VulDB"
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"references": [
{
"name": "VDB-407921 | Kamailio CDP Diameter Receiver receiver.c shm_malloc heap-based overflow",
"tags": [
"vdb-entry",
"technical-description"
],
"url": "https://vuldb.com/vuln/407921"
},
{
"name": "VDB-407921 | CTI Indicators (IOB, IOC, IOA)",
"tags": [
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"permissions-required"
],
"url": "https://vuldb.com/vuln/407921/cti"
},
{
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"tags": [
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],
"url": "https://vuldb.com/cve/CVE-2026-93962"
},
{
"name": "Submit #944244 | Kamailio Kamailio SIP Server 6.1.4 Heap-based Buffer Overflow",
"tags": [
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],
"url": "https://vuldb.com/submit/944244"
},
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"url": "https://github.com/kamailio/kamailio/issues/4876"
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"url": "https://github.com/kamailio/kamailio/commit/38711a3e788de0130d48cb485578c482b57d9351"
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"url": "https://github.com/kamailio/kamailio/releases/tag/6.0.8"
},
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"tags": [
"product"
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"url": "https://github.com/kamailio/kamailio/"
}
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"tags": [
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"lang": "en",
"time": "2026-09-19T00:00:00.000Z",
"value": "Advisory disclosed"
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{
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"time": "2026-09-19T02:00:00.000Z",
"value": "VulDB entry created"
},
{
"lang": "en",
"time": "2026-09-19T11:28:39.000Z",
"value": "VulDB entry last update"
}
],
"title": "Kamailio CDP Diameter Receiver receiver.c shm_malloc heap-based overflow",
"x_generator": [
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]
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"cveId": "CVE-2026-93962",
"datePublished": "2026-09-20T05:00:11.659Z",
"dateReserved": "2026-09-19T09:23:33.184Z",
"dateUpdated": "2026-09-20T05:00:11.659Z",
"state": "PUBLISHED"
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],
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],
"product": "Kamailio",
"vendor": "n/a",
"versions": [
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"status": "affected",
"version": "5.8.0"
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"version": "5.8.1"
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"version": "5.8.2"
},
{
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"version": "5.8.3"
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{
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"version": "5.8.4"
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{
"status": "affected",
"version": "5.8.5"
},
{
"status": "affected",
"version": "5.8.6"
},
{
"status": "affected",
"version": "5.8.7"
},
{
"status": "affected",
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{
"status": "affected",
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{
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{
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{
"status": "affected",
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"status": "affected",
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{
"status": "affected",
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{
"status": "affected",
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{
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{
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{
"status": "affected",
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{
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"source": "cna@vuldb.com"
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"descriptions": [
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"lang": "en",
"value": "A weakness has been identified in Kamailio up to 5.8.8/6.0.7/6.1.4/6.2.0-dev1. The impacted element is the function shm_malloc of the file src/modules/cdp/receiver.c of the component CDP Diameter Receiver. Executing a manipulation can lead to heap-based buffer overflow. It is possible to launch the attack remotely. The exploit has been made available to the public and could be used for attacks. Upgrading to version 6.0.8 is sufficient to resolve this issue. This patch is called 38711a3e788de0130d48cb485578c482b57d9351/4f62235b6f477b649c5cc18b0c81b4e26c949b98/4f62235b6f477b649c5cc18b0c81b4e26c949b98. You should upgrade the affected component."
}
],
"id": "CVE-2026-93962",
"lastModified": "2026-09-20T05:16:29.067",
"metrics": {
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"scope": "CHANGED",
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"Recovery": "NOT_DEFINED",
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"exploitMaturity": "PROOF_OF_CONCEPT",
"integrityRequirement": "NOT_DEFINED",
"modifiedAttackComplexity": "NOT_DEFINED",
"modifiedAttackRequirements": "NOT_DEFINED",
"modifiedAttackVector": "NOT_DEFINED",
"modifiedPrivilegesRequired": "NOT_DEFINED",
"modifiedSubAvailabilityImpact": "NOT_DEFINED",
"modifiedSubConfidentialityImpact": "NOT_DEFINED",
"modifiedSubIntegrityImpact": "NOT_DEFINED",
"modifiedUserInteraction": "NOT_DEFINED",
"modifiedVulnAvailabilityImpact": "NOT_DEFINED",
"modifiedVulnConfidentialityImpact": "NOT_DEFINED",
"modifiedVulnIntegrityImpact": "NOT_DEFINED",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
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"valueDensity": "NOT_DEFINED",
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"published": "2026-09-20T05:16:29.067",
"references": [
{
"source": "cna@vuldb.com",
"url": "https://github.com/kamailio/kamailio/"
},
{
"source": "cna@vuldb.com",
"url": "https://github.com/kamailio/kamailio/commit/38711a3e788de0130d48cb485578c482b57d9351"
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}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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