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CVE-2025-21591 Junos OS: An unauthenticated adjacent attacker sending a malformed DHCP packet causes jdhcpd to crash

🗓️ 09 Apr 2025 19:46:55Reported by juniperType 
cvelist
 cvelist
🔗 www.cve.org👁 74 Views

CVE-2025-21591 allows adjacent attacker to crash jdhcpd in Junos OS via malformed DHCP packet.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
bdu_fstec
BDU FSTEC
The vulnerability of the DHCP Daemon (jdhcpd) on Juniper Networks Junos OS allows a attacker to cause a service failure.
7 Jul 202500:00
–bdu_fstec
circl
Circl
CVE-2025-21591
9 Apr 202519:59
–circl
cnnvd
CNNVD
Juniper Networks Junos OS 安全漏洞
9 Apr 202500:00
–cnnvd
cve
CVE
CVE-2025-21591
9 Apr 202519:46
–cve
euvd
EUVD
EUVD-2025-10536
3 Oct 202520:07
–euvd
nvd
NVD
CVE-2025-21591
9 Apr 202520:15
–nvd
osv
OSV
CVE-2025-21591
9 Apr 202520:15
–osv
ptsecurity
Positive Technologies
PT-2025-15844 · Juniper Networks · Junos
9 Apr 202500:00
–ptsecurity
rapid7
Rapid7 Vulnerability Database (full)
CVE-2025-21591: Buffer Access with Incorrect Length Value
9 Apr 202500:00
–rapid7
redhatcve
RedhatCVE
CVE-2025-21591
11 Apr 202520:31
–redhatcve
Rows per page
[
  {
    "defaultStatus": "unaffected",
    "modules": [
      "dhcp"
    ],
    "packageName": "jdhcpd",
    "product": "Junos OS",
    "vendor": "Juniper Networks",
    "versions": [
      {
        "lessThan": "23.2R2-S3",
        "status": "affected",
        "version": "23.1",
        "versionType": "semver"
      },
      {
        "lessThan": "23.4R2-S3",
        "status": "affected",
        "version": "23.4",
        "versionType": "semver"
      },
      {
        "lessThan": "24.2R2",
        "status": "affected",
        "version": "24.2",
        "versionType": "semver"
      },
      {
        "lessThanOrEqual": "23.1R1",
        "status": "unaffected",
        "version": "0",
        "versionType": "semver"
      }
    ]
  }
]

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