CVE-2025-62820_CVE-2025-62820

4.9 / 10

MEDIUM

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:L

Description

Slack Nebula before 1.9.7 mishandles CIDR in some configurations and thus accepts arbitrary source IP addresses within the Nebula network.

Basic Information

ID CVE-2025-62820

Source mitre

Published Oct 23, 2025 at 00:00

Modified Oct 23, 2025 at 03:57

Affected Product

Vendor Slack

Product Nebula

Affected Versions Slack Nebula 0

CWE Classification

CWE-420

References

{
    "lastseen": "",
    "description": "Slack Nebula before 1.9.7 mishandles CIDR in some configurations and thus accepts arbitrary source IP addresses within the Nebula network.",
    "published": "2025-10-23T00:00:00.000Z",
    "modified": "2025-10-23T03:57:04.063Z",
    "type": "cve",
    "title": "CVE-2025-62820",
    "source": "mitre",
    "references": "https://github.com/slackhq/nebula/pull/1493\nhttps://github.com/slackhq/nebula/pull/1494",
    "id": "CVE-2025-62820",
    "bulletinFamily": "",
    "cwe": [
        "CWE-420"
    ],
    "cvelist": null,
    "sourceData": "Slack Nebula 0",
    "sourceHref": "",
    "cvss": {
        "score": 4.9,
        "severity": "MEDIUM",
        "vector": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:L",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Nebula",
    "version": "0",
    "vendor": "Slack",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}