CVE-2025-20191 (GCVE-0-2025-20191)
Vulnerability from cvelistv5 – Published: 2025-05-07 17:18 – Updated: 2025-05-07 19:46
VLAI
EPSS
VEX
Title
Multiple Cisco Products Denial of Service Vulnerability
Summary
A vulnerability in the Switch Integrated Security Features (SISF) of Cisco IOS Software, Cisco IOS XE Software, Cisco NX-OS Software, and Cisco Wireless LAN Controller (WLC) AireOS Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device.
This vulnerability is due to the incorrect handling of DHCPv6 packets. An attacker could exploit this vulnerability by sending a crafted DHCPv6 packet to an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition.
Severity
7.4 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-05-07 18:56 UTC
CWE
- CWE-805 - Buffer Access with Incorrect Length Value
Assigner
References
1 reference
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Cisco | Cisco NX-OS Software |
Affected:
8.2(5)
Affected: 7.3(5)D1(1) Affected: 8.4(2) Affected: 8.4(3) Affected: 9.2(3) Affected: 9.2(2v) Affected: 7.3(4)D1(1) Affected: 8.2(1) Affected: 9.2(1) Affected: 9.2(2t) Affected: 9.2(3y) Affected: 7.0(3)I7(6z) Affected: 9.3(2) Affected: 7.0(3)I7(3z) Affected: 7.0(3)IM7(2) Affected: 7.0(3)I7(5a) Affected: 8.1(1) Affected: 8.2(2) Affected: 8.3(2) Affected: 7.3(2)D1(3a) Affected: 9.2(4) Affected: 8.1(2) Affected: 7.3(3)D1(1) Affected: 8.2(3) Affected: 7.0(3)I7(2) Affected: 7.0(3)I7(3) Affected: 8.4(1) Affected: 7.3(0)DX(1) Affected: 7.3(2)D1(1) Affected: 9.3(1) Affected: 7.0(3)I7(6) Affected: 7.3(2)D1(2) Affected: 8.2(4) Affected: 7.0(3)I7(4) Affected: 7.0(3)I7(7) Affected: 9.3(1z) Affected: 9.2(2) Affected: 8.1(2a) Affected: 7.3(2)D1(3) Affected: 7.0(3)I7(5) Affected: 7.0(3)I7(1) Affected: 7.0(3)IA7(2) Affected: 7.0(3)IA7(1) Affected: 8.3(1) Affected: 7.3(1)D1(1) Affected: 7.3(0)D1(1) Affected: 9.3(3) Affected: 7.3(2)D1(1d) Affected: 7.0(3)I7(8) Affected: 9.3(4) Affected: 7.3(6)D1(1) Affected: 8.2(6) Affected: 9.3(5) Affected: 7.0(3)I7(9) Affected: 9.3(6) Affected: 10.1(2) Affected: 10.1(1) Affected: 8.4(4) Affected: 7.3(7)D1(1) Affected: 9.3(5w) Affected: 8.2(7) Affected: 9.3(7) Affected: 9.3(7k) Affected: 7.0(3)I7(9w) Affected: 10.2(1) Affected: 7.3(8)D1(1) Affected: 9.3(7a) Affected: 8.2(7a) Affected: 9.3(8) Affected: 8.4(4a) Affected: 8.4(5) Affected: 7.0(3)I7(10) Affected: 8.2(8) Affected: 10.2(1q) Affected: 10.2(2) Affected: 9.3(9) Affected: 10.1(2t) Affected: 7.3(9)D1(1) Affected: 10.2(3) Affected: 8.4(6) Affected: 10.2(3t) Affected: 9.3(10) Affected: 10.2(2a) Affected: 8.2(9) Affected: 10.3(1) Affected: 10.2(4) Affected: 8.4(7) Affected: 10.3(2) Affected: 8.4(6a) Affected: 9.3(11) Affected: 10.3(3) Affected: 10.2(5) Affected: 8.2(10) Affected: 9.3(12) Affected: 10.2(3v) Affected: 10.4(1) Affected: 8.4(8) Affected: 10.3(99w) Affected: 10.2(6) Affected: 10.3(3w) Affected: 10.3(99x) Affected: 10.3(3o) Affected: 8.4(9) Affected: 10.3(4) Affected: 10.3(3p) Affected: 10.3(4a) Affected: 10.4(2) Affected: 10.3(3q) Affected: 9.3(13) Affected: 8.2(11) Affected: 10.3(5) Affected: 10.2(7) Affected: 10.4(3) Affected: 10.3(3x) Affected: 10.3(4g) Affected: 10.2(8) Affected: 10.3(3r) Affected: 9.3(14) Affected: 10.3(4h) |
guessed | |
| Cisco | Cisco Wireless LAN Controller (WLC) |
Affected:
8.10.112.0
Affected: 8.8.120.0 Affected: 8.3.143.0 Affected: 8.3.111.0 Affected: 8.2.164.0 Affected: 8.5.109.0 Affected: 8.3.132.0 Affected: 8.5.105.0 Affected: 8.2.170.0 Affected: 8.2.160.0 Affected: 8.8.100.0 Affected: 8.9.111.0 Affected: 8.7.102.0 Affected: 8.3.102.0 Affected: 8.3.133.0 Affected: 8.3.131.0 Affected: 8.5.100.0 Affected: 8.5.131.0 Affected: 8.3.122.0 Affected: 8.5.101.0 Affected: 8.3.112.0 Affected: 8.5.120.0 Affected: 8.2.141.0 Affected: 8.3.141.0 Affected: 8.3.121.0 Affected: 8.2.151.0 Affected: 8.3.130.0 Affected: 8.5.102.0 Affected: 8.2.161.0 Affected: 8.5.151.0 Affected: 8.2.100.0 Affected: 8.5.135.0 Affected: 8.3.135.0 Affected: 8.5.140.0 Affected: 8.7.106.0 Affected: 8.9.100.0 Affected: 8.8.111.0 Affected: 8.2.110.0 Affected: 8.5.110.0 Affected: 8.2.130.0 Affected: 8.5.141.105 Affected: 8.2.121.0 Affected: 8.8.125.0 Affected: 8.3.150.0 Affected: 8.2.111.0 Affected: 8.10.105.0 Affected: 8.5.108.0 Affected: 8.3.108.0 Affected: 8.2.166.0 Affected: 8.5.103.0 Affected: 8.3.140.0 Affected: 8.6.101.0 Affected: 8.4.100.0 Affected: 8.5.160.0 Affected: 8.5.161.0 Affected: 8.8.130.0 Affected: 8.10.120.0 Affected: 8.10.121.0 Affected: 8.10.113.0 Affected: 8.10.122.0 Affected: 8.10.130.0 Affected: 8.10.141.0 Affected: 8.10.142.0 Affected: 8.5.171.0 Affected: 8.10.150.0 Affected: 8.10.151.0 Affected: 8.10.162.0 Affected: 8.5.182.0 Affected: 8.10.171.0 Affected: 8.10.180.0 Affected: 8.10.181.0 Affected: 8.10.182.0 Affected: 8.10.170.0 Affected: 8.10.183.0 Affected: 8.5.182.7 Affected: 8.5.182.105 Affected: 8.5.182.106 Affected: 8.10.185.0 Affected: 8.5.182.107 Affected: 8.5.182.11 Affected: 8.5.182.108 Affected: 8.10.190.0 Affected: 8.10.195.0 Affected: 8.5.182.12 |
guessed |
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"status": "affected",
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{
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{
"status": "affected",
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{
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"version": "8.3.135.0"
},
{
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{
"status": "affected",
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{
"status": "affected",
"version": "8.9.100.0"
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{
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{
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"version": "8.5.141.105"
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{
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"version": "8.2.121.0"
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},
{
"status": "affected",
"version": "8.3.150.0"
},
{
"status": "affected",
"version": "8.2.111.0"
},
{
"status": "affected",
"version": "8.10.105.0"
},
{
"status": "affected",
"version": "8.5.108.0"
},
{
"status": "affected",
"version": "8.3.108.0"
},
{
"status": "affected",
"version": "8.2.166.0"
},
{
"status": "affected",
"version": "8.5.103.0"
},
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"status": "affected",
"version": "8.3.140.0"
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"version": "8.10.120.0"
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"version": "8.10.121.0"
},
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"status": "affected",
"version": "8.10.113.0"
},
{
"status": "affected",
"version": "8.10.122.0"
},
{
"status": "affected",
"version": "8.10.130.0"
},
{
"status": "affected",
"version": "8.10.141.0"
},
{
"status": "affected",
"version": "8.10.142.0"
},
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"status": "affected",
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},
{
"status": "affected",
"version": "8.10.150.0"
},
{
"status": "affected",
"version": "8.10.151.0"
},
{
"status": "affected",
"version": "8.10.162.0"
},
{
"status": "affected",
"version": "8.5.182.0"
},
{
"status": "affected",
"version": "8.10.171.0"
},
{
"status": "affected",
"version": "8.10.180.0"
},
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"version": "8.10.181.0"
},
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"value": "A vulnerability in the Switch Integrated Security Features (SISF) of Cisco IOS Software, Cisco IOS XE Software, Cisco NX-OS Software, and Cisco Wireless LAN Controller (WLC) AireOS Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device.\r\n\r\nThis vulnerability is due to the incorrect handling of DHCPv6 packets. An attacker could exploit this vulnerability by sending a crafted DHCPv6 packet to an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition."
},
{
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"value": "Una vulnerabilidad en las Funciones de Seguridad Integradas del Switch (SISF) de Cisco IOS Software, Cisco IOS XE Software, Cisco NX-OS Software y Cisco Wireless LAN Controller (WLC) AireOS Software podr\u00eda permitir que un atacante adyacente no autenticado provoque una denegaci\u00f3n de servicio (DoS) en un dispositivo afectado. Esta vulnerabilidad se debe al manejo incorrecto de paquetes DHCPv6. Un atacante podr\u00eda explotar esta vulnerabilidad enviando un paquete DHCPv6 manipulado a un dispositivo afectado. Si se explota con \u00e9xito, el atacante podr\u00eda provocar la recarga del dispositivo, lo que provocar\u00eda una denegaci\u00f3n de servicio (DoS)."
}
],
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"timestamp": "2025-05-07T18:56:29.479638Z",
"version": "2.0.3"
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"vulnStatus": "Deferred",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-805"
}
],
"source": "psirt@cisco.com",
"type": "Secondary"
}
]
}
},
"redhat_vex": {
"current_release_date": "2025-05-28T18:15:42+00:00",
"cve": "CVE-2025-20191",
"id": "CVE-2025-20191",
"initial_release_date": "2025-01-01T00:00:00+00:00",
"product_status:known_not_affected": "1",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "Multiple Cisco Products Denial of Service Vulnerability",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-20191.json",
"version": "3"
},
"vulnrichment": {
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2025-20191",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-05-07T18:56:29.479638Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2025-05-07T18:56:30.730Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unknown",
"product": "Cisco NX-OS Software",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "8.2(5)"
},
{
"status": "affected",
"version": "7.3(5)D1(1)"
},
{
"status": "affected",
"version": "8.4(2)"
},
{
"status": "affected",
"version": "8.4(3)"
},
{
"status": "affected",
"version": "9.2(3)"
},
{
"status": "affected",
"version": "9.2(2v)"
},
{
"status": "affected",
"version": "7.3(4)D1(1)"
},
{
"status": "affected",
"version": "8.2(1)"
},
{
"status": "affected",
"version": "9.2(1)"
},
{
"status": "affected",
"version": "9.2(2t)"
},
{
"status": "affected",
"version": "9.2(3y)"
},
{
"status": "affected",
"version": "7.0(3)I7(6z)"
},
{
"status": "affected",
"version": "9.3(2)"
},
{
"status": "affected",
"version": "7.0(3)I7(3z)"
},
{
"status": "affected",
"version": "7.0(3)IM7(2)"
},
{
"status": "affected",
"version": "7.0(3)I7(5a)"
},
{
"status": "affected",
"version": "8.1(1)"
},
{
"status": "affected",
"version": "8.2(2)"
},
{
"status": "affected",
"version": "8.3(2)"
},
{
"status": "affected",
"version": "7.3(2)D1(3a)"
},
{
"status": "affected",
"version": "9.2(4)"
},
{
"status": "affected",
"version": "8.1(2)"
},
{
"status": "affected",
"version": "7.3(3)D1(1)"
},
{
"status": "affected",
"version": "8.2(3)"
},
{
"status": "affected",
"version": "7.0(3)I7(2)"
},
{
"status": "affected",
"version": "7.0(3)I7(3)"
},
{
"status": "affected",
"version": "8.4(1)"
},
{
"status": "affected",
"version": "7.3(0)DX(1)"
},
{
"status": "affected",
"version": "7.3(2)D1(1)"
},
{
"status": "affected",
"version": "9.3(1)"
},
{
"status": "affected",
"version": "7.0(3)I7(6)"
},
{
"status": "affected",
"version": "7.3(2)D1(2)"
},
{
"status": "affected",
"version": "8.2(4)"
},
{
"status": "affected",
"version": "7.0(3)I7(4)"
},
{
"status": "affected",
"version": "7.0(3)I7(7)"
},
{
"status": "affected",
"version": "9.3(1z)"
},
{
"status": "affected",
"version": "9.2(2)"
},
{
"status": "affected",
"version": "8.1(2a)"
},
{
"status": "affected",
"version": "7.3(2)D1(3)"
},
{
"status": "affected",
"version": "7.0(3)I7(5)"
},
{
"status": "affected",
"version": "7.0(3)I7(1)"
},
{
"status": "affected",
"version": "7.0(3)IA7(2)"
},
{
"status": "affected",
"version": "7.0(3)IA7(1)"
},
{
"status": "affected",
"version": "8.3(1)"
},
{
"status": "affected",
"version": "7.3(1)D1(1)"
},
{
"status": "affected",
"version": "7.3(0)D1(1)"
},
{
"status": "affected",
"version": "9.3(3)"
},
{
"status": "affected",
"version": "7.3(2)D1(1d)"
},
{
"status": "affected",
"version": "7.0(3)I7(8)"
},
{
"status": "affected",
"version": "9.3(4)"
},
{
"status": "affected",
"version": "7.3(6)D1(1)"
},
{
"status": "affected",
"version": "8.2(6)"
},
{
"status": "affected",
"version": "9.3(5)"
},
{
"status": "affected",
"version": "7.0(3)I7(9)"
},
{
"status": "affected",
"version": "9.3(6)"
},
{
"status": "affected",
"version": "10.1(2)"
},
{
"status": "affected",
"version": "10.1(1)"
},
{
"status": "affected",
"version": "8.4(4)"
},
{
"status": "affected",
"version": "7.3(7)D1(1)"
},
{
"status": "affected",
"version": "9.3(5w)"
},
{
"status": "affected",
"version": "8.2(7)"
},
{
"status": "affected",
"version": "9.3(7)"
},
{
"status": "affected",
"version": "9.3(7k)"
},
{
"status": "affected",
"version": "7.0(3)I7(9w)"
},
{
"status": "affected",
"version": "10.2(1)"
},
{
"status": "affected",
"version": "7.3(8)D1(1)"
},
{
"status": "affected",
"version": "9.3(7a)"
},
{
"status": "affected",
"version": "8.2(7a)"
},
{
"status": "affected",
"version": "9.3(8)"
},
{
"status": "affected",
"version": "8.4(4a)"
},
{
"status": "affected",
"version": "8.4(5)"
},
{
"status": "affected",
"version": "7.0(3)I7(10)"
},
{
"status": "affected",
"version": "8.2(8)"
},
{
"status": "affected",
"version": "10.2(1q)"
},
{
"status": "affected",
"version": "10.2(2)"
},
{
"status": "affected",
"version": "9.3(9)"
},
{
"status": "affected",
"version": "10.1(2t)"
},
{
"status": "affected",
"version": "7.3(9)D1(1)"
},
{
"status": "affected",
"version": "10.2(3)"
},
{
"status": "affected",
"version": "8.4(6)"
},
{
"status": "affected",
"version": "10.2(3t)"
},
{
"status": "affected",
"version": "9.3(10)"
},
{
"status": "affected",
"version": "10.2(2a)"
},
{
"status": "affected",
"version": "8.2(9)"
},
{
"status": "affected",
"version": "10.3(1)"
},
{
"status": "affected",
"version": "10.2(4)"
},
{
"status": "affected",
"version": "8.4(7)"
},
{
"status": "affected",
"version": "10.3(2)"
},
{
"status": "affected",
"version": "8.4(6a)"
},
{
"status": "affected",
"version": "9.3(11)"
},
{
"status": "affected",
"version": "10.3(3)"
},
{
"status": "affected",
"version": "10.2(5)"
},
{
"status": "affected",
"version": "8.2(10)"
},
{
"status": "affected",
"version": "9.3(12)"
},
{
"status": "affected",
"version": "10.2(3v)"
},
{
"status": "affected",
"version": "10.4(1)"
},
{
"status": "affected",
"version": "8.4(8)"
},
{
"status": "affected",
"version": "10.3(99w)"
},
{
"status": "affected",
"version": "10.2(6)"
},
{
"status": "affected",
"version": "10.3(3w)"
},
{
"status": "affected",
"version": "10.3(99x)"
},
{
"status": "affected",
"version": "10.3(3o)"
},
{
"status": "affected",
"version": "8.4(9)"
},
{
"status": "affected",
"version": "10.3(4)"
},
{
"status": "affected",
"version": "10.3(3p)"
},
{
"status": "affected",
"version": "10.3(4a)"
},
{
"status": "affected",
"version": "10.4(2)"
},
{
"status": "affected",
"version": "10.3(3q)"
},
{
"status": "affected",
"version": "9.3(13)"
},
{
"status": "affected",
"version": "8.2(11)"
},
{
"status": "affected",
"version": "10.3(5)"
},
{
"status": "affected",
"version": "10.2(7)"
},
{
"status": "affected",
"version": "10.4(3)"
},
{
"status": "affected",
"version": "10.3(3x)"
},
{
"status": "affected",
"version": "10.3(4g)"
},
{
"status": "affected",
"version": "10.2(8)"
},
{
"status": "affected",
"version": "10.3(3r)"
},
{
"status": "affected",
"version": "9.3(14)"
},
{
"status": "affected",
"version": "10.3(4h)"
}
]
},
{
"defaultStatus": "unknown",
"product": "Cisco Wireless LAN Controller (WLC)",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "8.10.112.0"
},
{
"status": "affected",
"version": "8.8.120.0"
},
{
"status": "affected",
"version": "8.3.143.0"
},
{
"status": "affected",
"version": "8.3.111.0"
},
{
"status": "affected",
"version": "8.2.164.0"
},
{
"status": "affected",
"version": "8.5.109.0"
},
{
"status": "affected",
"version": "8.3.132.0"
},
{
"status": "affected",
"version": "8.5.105.0"
},
{
"status": "affected",
"version": "8.2.170.0"
},
{
"status": "affected",
"version": "8.2.160.0"
},
{
"status": "affected",
"version": "8.8.100.0"
},
{
"status": "affected",
"version": "8.9.111.0"
},
{
"status": "affected",
"version": "8.7.102.0"
},
{
"status": "affected",
"version": "8.3.102.0"
},
{
"status": "affected",
"version": "8.3.133.0"
},
{
"status": "affected",
"version": "8.3.131.0"
},
{
"status": "affected",
"version": "8.5.100.0"
},
{
"status": "affected",
"version": "8.5.131.0"
},
{
"status": "affected",
"version": "8.3.122.0"
},
{
"status": "affected",
"version": "8.5.101.0"
},
{
"status": "affected",
"version": "8.3.112.0"
},
{
"status": "affected",
"version": "8.5.120.0"
},
{
"status": "affected",
"version": "8.2.141.0"
},
{
"status": "affected",
"version": "8.3.141.0"
},
{
"status": "affected",
"version": "8.3.121.0"
},
{
"status": "affected",
"version": "8.2.151.0"
},
{
"status": "affected",
"version": "8.3.130.0"
},
{
"status": "affected",
"version": "8.5.102.0"
},
{
"status": "affected",
"version": "8.2.161.0"
},
{
"status": "affected",
"version": "8.5.151.0"
},
{
"status": "affected",
"version": "8.2.100.0"
},
{
"status": "affected",
"version": "8.5.135.0"
},
{
"status": "affected",
"version": "8.3.135.0"
},
{
"status": "affected",
"version": "8.5.140.0"
},
{
"status": "affected",
"version": "8.7.106.0"
},
{
"status": "affected",
"version": "8.9.100.0"
},
{
"status": "affected",
"version": "8.8.111.0"
},
{
"status": "affected",
"version": "8.2.110.0"
},
{
"status": "affected",
"version": "8.5.110.0"
},
{
"status": "affected",
"version": "8.2.130.0"
},
{
"status": "affected",
"version": "8.5.141.105"
},
{
"status": "affected",
"version": "8.2.121.0"
},
{
"status": "affected",
"version": "8.8.125.0"
},
{
"status": "affected",
"version": "8.3.150.0"
},
{
"status": "affected",
"version": "8.2.111.0"
},
{
"status": "affected",
"version": "8.10.105.0"
},
{
"status": "affected",
"version": "8.5.108.0"
},
{
"status": "affected",
"version": "8.3.108.0"
},
{
"status": "affected",
"version": "8.2.166.0"
},
{
"status": "affected",
"version": "8.5.103.0"
},
{
"status": "affected",
"version": "8.3.140.0"
},
{
"status": "affected",
"version": "8.6.101.0"
},
{
"status": "affected",
"version": "8.4.100.0"
},
{
"status": "affected",
"version": "8.5.160.0"
},
{
"status": "affected",
"version": "8.5.161.0"
},
{
"status": "affected",
"version": "8.8.130.0"
},
{
"status": "affected",
"version": "8.10.120.0"
},
{
"status": "affected",
"version": "8.10.121.0"
},
{
"status": "affected",
"version": "8.10.113.0"
},
{
"status": "affected",
"version": "8.10.122.0"
},
{
"status": "affected",
"version": "8.10.130.0"
},
{
"status": "affected",
"version": "8.10.141.0"
},
{
"status": "affected",
"version": "8.10.142.0"
},
{
"status": "affected",
"version": "8.5.171.0"
},
{
"status": "affected",
"version": "8.10.150.0"
},
{
"status": "affected",
"version": "8.10.151.0"
},
{
"status": "affected",
"version": "8.10.162.0"
},
{
"status": "affected",
"version": "8.5.182.0"
},
{
"status": "affected",
"version": "8.10.171.0"
},
{
"status": "affected",
"version": "8.10.180.0"
},
{
"status": "affected",
"version": "8.10.181.0"
},
{
"status": "affected",
"version": "8.10.182.0"
},
{
"status": "affected",
"version": "8.10.170.0"
},
{
"status": "affected",
"version": "8.10.183.0"
},
{
"status": "affected",
"version": "8.5.182.7"
},
{
"status": "affected",
"version": "8.5.182.105"
},
{
"status": "affected",
"version": "8.5.182.106"
},
{
"status": "affected",
"version": "8.10.185.0"
},
{
"status": "affected",
"version": "8.5.182.107"
},
{
"status": "affected",
"version": "8.5.182.11"
},
{
"status": "affected",
"version": "8.5.182.108"
},
{
"status": "affected",
"version": "8.10.190.0"
},
{
"status": "affected",
"version": "8.10.195.0"
},
{
"status": "affected",
"version": "8.5.182.12"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "A vulnerability in the Switch Integrated Security Features (SISF) of Cisco IOS Software, Cisco IOS XE Software, Cisco NX-OS Software, and Cisco Wireless LAN Controller (WLC) AireOS Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device.\r\n\r\nThis vulnerability is due to the incorrect handling of DHCPv6 packets. An attacker could exploit this vulnerability by sending a crafted DHCPv6 packet to an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition."
}
],
"exploits": [
{
"lang": "en",
"value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "ADJACENT_NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.4,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H",
"version": "3.1"
},
"format": "cvssV3_1"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-805",
"description": "Buffer Access with Incorrect Length Value",
"lang": "en",
"type": "cwe"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2025-05-07T17:18:35.677Z",
"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"shortName": "cisco"
},
"references": [
{
"name": "cisco-sa-sisf-dos-ZGwt4DdY",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sisf-dos-ZGwt4DdY"
}
],
"source": {
"advisory": "cisco-sa-sisf-dos-ZGwt4DdY",
"defects": [
"CSCvq14413"
],
"discovery": "EXTERNAL"
},
"title": "Multiple Cisco Products Denial of Service Vulnerability"
}
},
"cveMetadata": {
"assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"assignerShortName": "cisco",
"cveId": "CVE-2025-20191",
"datePublished": "2025-05-07T17:18:35.677Z",
"dateReserved": "2024-10-10T19:15:13.226Z",
"dateUpdated": "2025-05-07T19:46:53.825Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
}
}
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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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