CVE-2024-20390
Status: AnalyzedMedium (5.3)—
A vulnerability in the Dedicated XML Agent feature of Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) on XML TCP listen port 38751.
This vulnerability is due to a lack of proper error validation of ingress XML packets. An attacker could exploit this vulnerability by sending a sustained, crafted stream of XML traffic to a targeted device. A successful exploit could allow the attacker to cause XML TCP port 38751 to become unreachable while the attack traffic persists.
CVSS
- Version: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- Base score: 5.3
Exploitation probability (EPSS)
- Probability of exploitation in the next 30 days: 0.44%
- Percentile among all scored CVEs: 36
- Score date: 10/7/2026
EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).
Affected technologies (1)
CWEs
- CWE-940
- NVD-CWE-Other
References
Raw JSON (NVD)
Show
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"value": "A vulnerability in the Dedicated XML Agent feature of Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) on XML TCP listen port 38751.\r\n\r\nThis vulnerability is due to a lack of proper error validation of ingress XML packets. An attacker could exploit this vulnerability by sending a sustained, crafted stream of XML traffic to a targeted device. A successful exploit could allow the attacker to cause XML TCP port 38751 to become unreachable while the attack traffic persists."
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"value": "Una vulnerabilidad en la función Dedicated XML Agent del software Cisco IOS XR podría permitir que un atacante remoto no autenticado provoque una denegación de servicio (DoS) en el puerto de escucha XML TCP 38751. Esta vulnerabilidad se debe a la falta de una validación de errores adecuada de los paquetes XML de entrada. Un atacante podría aprovechar esta vulnerabilidad enviando un flujo continuo y elaborado de tráfico XML a un dispositivo de destino. Una explotación exitosa podría permitir al atacante hacer que el puerto XML TCP 38751 se vuelva inaccesible mientras persista el tráfico de ataque."
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"lastModified": "2026-06-17T07:06:54.443",
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