CVE-2026-20152 (GCVE-0-2026-20152)
Vulnerability from cvelistv5 – Published: 2026-04-15 16:03 – Updated: 2026-04-16 19:05
VLAI?
Title
Cisco Secure Web Appliance Authentication Service Traffic Bypass Vulnerability
Summary
A vulnerability in the authentication service feature of Cisco AsyncOS Software for Cisco Secure Web Appliance could allow an unauthenticated, remote attacker to bypass authentication policy requirements.
This vulnerability is due to improper validation of user-supplied authentication input in HTTP requests. An attacker could exploit this vulnerability by sending HTTP requests that contain specific authentication requests to an affected device. A successful exploit could allow the attacker to bypass policy enforcement on the device. There is no direct impact to the Cisco Secure Web Appliance. However, as a result of exploiting this vulnerability, an attacker could send HTTP requests that should be restricted through the device.
Severity ?
5.3 (Medium)
CWE
- CWE-305 - Authentication Bypass by Primary Weakness
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Cisco | Cisco Secure Web Appliance |
Affected:
11.8.0-453
Affected: 12.5.3-002 Affected: 12.0.3-007 Affected: 12.0.3-005 Affected: 14.1.0-032 Affected: 14.1.0-047 Affected: 14.1.0-041 Affected: 12.0.4-002 Affected: 14.0.2-012 Affected: 11.8.0-414 Affected: 12.0.1-268 Affected: 11.8.1-023 Affected: 11.8.3-021 Affected: 11.8.3-018 Affected: 12.5.1-011 Affected: 11.8.4-004 Affected: 12.5.2-007 Affected: 12.5.2-011 Affected: 14.5.0-498 Affected: 12.5.4-005 Affected: 12.5.4-011 Affected: 12.0.5-011 Affected: 14.0.3-014 Affected: 12.5.5-004 Affected: 12.5.5-005 Affected: 12.5.5-008 Affected: 14.0.4-005 Affected: 14.5.1-008 Affected: 14.5.1-016 Affected: 15.0.0-355 Affected: 15.0.0-322 Affected: 12.5.6-008 Affected: 15.1.0-287 Affected: 14.5.2-011 Affected: 15.2.0-116 Affected: 14.0.5-007 Affected: 15.2.0-164 Affected: 14.5.1-510 Affected: 12.0.2-012 Affected: 12.0.2-004 Affected: 14.5.1-607 Affected: 14.5.3-033 Affected: 15.0.1-004 Affected: 15.2.1-011 Affected: 14.5.0-673 Affected: 14.5.0-537 Affected: 12.0.1-334 Affected: 14.0.1-503 Affected: 14.0.1-053 Affected: 11.8.0-429 Affected: 14.0.1-040 Affected: 14.0.1-014 Affected: 12.5.1-043 Affected: 15.2.2-009 Affected: 15.2.3-007 Affected: 15.2.4-022 Affected: 15.2.5-011 Affected: 15.2.5-013 Affected: 14.6.0-108 |
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-20152",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-04-15T16:47:46.764093Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-04-15T16:56:35.035Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unknown",
"product": "Cisco Secure Web Appliance",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "11.8.0-453"
},
{
"status": "affected",
"version": "12.5.3-002"
},
{
"status": "affected",
"version": "12.0.3-007"
},
{
"status": "affected",
"version": "12.0.3-005"
},
{
"status": "affected",
"version": "14.1.0-032"
},
{
"status": "affected",
"version": "14.1.0-047"
},
{
"status": "affected",
"version": "14.1.0-041"
},
{
"status": "affected",
"version": "12.0.4-002"
},
{
"status": "affected",
"version": "14.0.2-012"
},
{
"status": "affected",
"version": "11.8.0-414"
},
{
"status": "affected",
"version": "12.0.1-268"
},
{
"status": "affected",
"version": "11.8.1-023"
},
{
"status": "affected",
"version": "11.8.3-021"
},
{
"status": "affected",
"version": "11.8.3-018"
},
{
"status": "affected",
"version": "12.5.1-011"
},
{
"status": "affected",
"version": "11.8.4-004"
},
{
"status": "affected",
"version": "12.5.2-007"
},
{
"status": "affected",
"version": "12.5.2-011"
},
{
"status": "affected",
"version": "14.5.0-498"
},
{
"status": "affected",
"version": "12.5.4-005"
},
{
"status": "affected",
"version": "12.5.4-011"
},
{
"status": "affected",
"version": "12.0.5-011"
},
{
"status": "affected",
"version": "14.0.3-014"
},
{
"status": "affected",
"version": "12.5.5-004"
},
{
"status": "affected",
"version": "12.5.5-005"
},
{
"status": "affected",
"version": "12.5.5-008"
},
{
"status": "affected",
"version": "14.0.4-005"
},
{
"status": "affected",
"version": "14.5.1-008"
},
{
"status": "affected",
"version": "14.5.1-016"
},
{
"status": "affected",
"version": "15.0.0-355"
},
{
"status": "affected",
"version": "15.0.0-322"
},
{
"status": "affected",
"version": "12.5.6-008"
},
{
"status": "affected",
"version": "15.1.0-287"
},
{
"status": "affected",
"version": "14.5.2-011"
},
{
"status": "affected",
"version": "15.2.0-116"
},
{
"status": "affected",
"version": "14.0.5-007"
},
{
"status": "affected",
"version": "15.2.0-164"
},
{
"status": "affected",
"version": "14.5.1-510"
},
{
"status": "affected",
"version": "12.0.2-012"
},
{
"status": "affected",
"version": "12.0.2-004"
},
{
"status": "affected",
"version": "14.5.1-607"
},
{
"status": "affected",
"version": "14.5.3-033"
},
{
"status": "affected",
"version": "15.0.1-004"
},
{
"status": "affected",
"version": "15.2.1-011"
},
{
"status": "affected",
"version": "14.5.0-673"
},
{
"status": "affected",
"version": "14.5.0-537"
},
{
"status": "affected",
"version": "12.0.1-334"
},
{
"status": "affected",
"version": "14.0.1-503"
},
{
"status": "affected",
"version": "14.0.1-053"
},
{
"status": "affected",
"version": "11.8.0-429"
},
{
"status": "affected",
"version": "14.0.1-040"
},
{
"status": "affected",
"version": "14.0.1-014"
},
{
"status": "affected",
"version": "12.5.1-043"
},
{
"status": "affected",
"version": "15.2.2-009"
},
{
"status": "affected",
"version": "15.2.3-007"
},
{
"status": "affected",
"version": "15.2.4-022"
},
{
"status": "affected",
"version": "15.2.5-011"
},
{
"status": "affected",
"version": "15.2.5-013"
},
{
"status": "affected",
"version": "14.6.0-108"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "A vulnerability in the authentication service feature of Cisco AsyncOS Software for Cisco Secure Web Appliance could allow an unauthenticated, remote attacker to bypass authentication policy requirements.\r\n\r\nThis vulnerability is due to improper validation of user-supplied authentication input in HTTP requests. An attacker could exploit this vulnerability by sending HTTP requests that contain specific authentication requests to an affected device. A successful exploit could allow the attacker to bypass policy enforcement on the device. There is no direct impact to the Cisco Secure Web Appliance. However, as a result of exploiting this vulnerability, an attacker could send HTTP requests that should be restricted through the device."
}
],
"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": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
"version": "3.1"
},
"format": "cvssV3_1"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-305",
"description": "Authentication Bypass by Primary Weakness",
"lang": "en",
"type": "cwe"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-04-16T19:05:18.524Z",
"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"shortName": "cisco"
},
"references": [
{
"name": "cisco-sa-wsa-auth-bypass-6YZkTQhd",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wsa-auth-bypass-6YZkTQhd"
}
],
"source": {
"advisory": "cisco-sa-wsa-auth-bypass-6YZkTQhd",
"defects": [
"CSCwr20696"
],
"discovery": "EXTERNAL"
},
"title": "Cisco Secure Web Appliance Authentication Service Traffic Bypass Vulnerability"
}
},
"cveMetadata": {
"assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"assignerShortName": "cisco",
"cveId": "CVE-2026-20152",
"datePublished": "2026-04-15T16:03:43.828Z",
"dateReserved": "2025-10-08T11:59:15.386Z",
"dateUpdated": "2026-04-16T19:05:18.524Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-20152",
"date": "2026-04-16",
"epss": "0.00071",
"percentile": "0.21637"
},
"nvd": "{\"cve\":{\"id\":\"CVE-2026-20152\",\"sourceIdentifier\":\"psirt@cisco.com\",\"published\":\"2026-04-15T17:17:02.870\",\"lastModified\":\"2026-04-15T17:17:02.870\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"A vulnerability in the authentication service feature of Cisco AsyncOS Software for Cisco Secure Web Appliance could allow an unauthenticated, remote attacker to bypass authentication policy requirements.\\r\\n\\r\\nThis vulnerability is due to improper validation of user-supplied authentication input in HTTP requests. An attacker could exploit this vulnerability by sending HTTP requests that contain specific authentication requests to an affected device. A successful exploit could allow the attacker to bypass policy enforcement on the device. There is no direct impact to the Cisco Secure Web Appliance. However, as a result of exploiting this vulnerability, an attacker could send HTTP requests that should be restricted through the device.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"psirt@cisco.com\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N\",\"baseScore\":5.3,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":3.9,\"impactScore\":1.4}]},\"weaknesses\":[{\"source\":\"psirt@cisco.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-305\"}]}],\"references\":[{\"url\":\"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wsa-auth-bypass-6YZkTQhd\",\"source\":\"psirt@cisco.com\"}]}}",
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-20152\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"yes\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-04-15T16:47:46.764093Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-04-15T16:56:24.673Z\"}}], \"cna\": {\"title\": \"Cisco Secure Web Appliance Authentication Service Traffic Bypass Vulnerability\", \"source\": {\"defects\": [\"CSCwr20696\"], \"advisory\": \"cisco-sa-wsa-auth-bypass-6YZkTQhd\", \"discovery\": \"EXTERNAL\"}, \"metrics\": [{\"format\": \"cvssV3_1\", \"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 5.3, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N\", \"integrityImpact\": \"LOW\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"NONE\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"NONE\"}}], \"affected\": [{\"vendor\": \"Cisco\", \"product\": \"Cisco Secure Web Appliance\", \"versions\": [{\"status\": \"affected\", \"version\": \"11.8.0-453\"}, {\"status\": \"affected\", \"version\": \"12.5.3-002\"}, {\"status\": \"affected\", \"version\": \"12.0.3-007\"}, {\"status\": \"affected\", \"version\": \"12.0.3-005\"}, {\"status\": \"affected\", \"version\": \"14.1.0-032\"}, {\"status\": \"affected\", \"version\": \"14.1.0-047\"}, {\"status\": \"affected\", \"version\": \"14.1.0-041\"}, {\"status\": \"affected\", \"version\": \"12.0.4-002\"}, {\"status\": \"affected\", \"version\": \"14.0.2-012\"}, {\"status\": \"affected\", \"version\": \"11.8.0-414\"}, {\"status\": \"affected\", \"version\": \"12.0.1-268\"}, {\"status\": \"affected\", \"version\": \"11.8.1-023\"}, {\"status\": \"affected\", \"version\": \"11.8.3-021\"}, {\"status\": \"affected\", \"version\": \"11.8.3-018\"}, {\"status\": \"affected\", \"version\": \"12.5.1-011\"}, {\"status\": \"affected\", \"version\": \"11.8.4-004\"}, {\"status\": \"affected\", \"version\": \"12.5.2-007\"}, {\"status\": \"affected\", \"version\": \"12.5.2-011\"}, {\"status\": \"affected\", \"version\": \"14.5.0-498\"}, {\"status\": \"affected\", \"version\": \"12.5.4-005\"}, {\"status\": \"affected\", \"version\": \"12.5.4-011\"}, {\"status\": \"affected\", \"version\": \"12.0.5-011\"}, {\"status\": \"affected\", \"version\": \"14.0.3-014\"}, {\"status\": \"affected\", \"version\": \"12.5.5-004\"}, {\"status\": \"affected\", \"version\": \"12.5.5-005\"}, {\"status\": \"affected\", \"version\": \"12.5.5-008\"}, {\"status\": \"affected\", \"version\": \"14.0.4-005\"}, {\"status\": \"affected\", \"version\": \"14.5.1-008\"}, {\"status\": \"affected\", \"version\": \"14.5.1-016\"}, {\"status\": \"affected\", \"version\": \"15.0.0-355\"}, {\"status\": \"affected\", \"version\": \"15.0.0-322\"}, {\"status\": \"affected\", \"version\": \"12.5.6-008\"}, {\"status\": \"affected\", \"version\": \"15.1.0-287\"}, {\"status\": \"affected\", \"version\": \"14.5.2-011\"}, {\"status\": \"affected\", \"version\": \"15.2.0-116\"}, {\"status\": \"affected\", \"version\": \"14.0.5-007\"}, {\"status\": \"affected\", \"version\": \"15.2.0-164\"}, {\"status\": \"affected\", \"version\": \"14.5.1-510\"}, {\"status\": \"affected\", \"version\": \"12.0.2-012\"}, {\"status\": \"affected\", \"version\": \"12.0.2-004\"}, {\"status\": \"affected\", \"version\": \"14.5.1-607\"}, {\"status\": \"affected\", \"version\": \"14.5.3-033\"}, {\"status\": \"affected\", \"version\": \"15.0.1-004\"}, {\"status\": \"affected\", \"version\": \"15.2.1-011\"}, {\"status\": \"affected\", \"version\": \"14.5.0-673\"}, {\"status\": \"affected\", \"version\": \"14.5.0-537\"}, {\"status\": \"affected\", \"version\": \"12.0.1-334\"}, {\"status\": \"affected\", \"version\": \"14.0.1-503\"}, {\"status\": \"affected\", \"version\": \"14.0.1-053\"}, {\"status\": \"affected\", \"version\": \"11.8.0-429\"}, {\"status\": \"affected\", \"version\": \"14.0.1-040\"}, {\"status\": \"affected\", \"version\": \"14.0.1-014\"}, {\"status\": \"affected\", \"version\": \"12.5.1-043\"}, {\"status\": \"affected\", \"version\": \"15.2.2-009\"}, {\"status\": \"affected\", \"version\": \"15.2.3-007\"}, {\"status\": \"affected\", \"version\": \"15.2.4-022\"}, {\"status\": \"affected\", \"version\": \"15.2.5-011\"}, {\"status\": \"affected\", \"version\": \"15.2.5-013\"}, {\"status\": \"affected\", \"version\": \"14.6.0-108\"}], \"defaultStatus\": \"unknown\"}], \"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.\"}], \"references\": [{\"url\": \"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wsa-auth-bypass-6YZkTQhd\", \"name\": \"cisco-sa-wsa-auth-bypass-6YZkTQhd\"}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"A vulnerability in the authentication service feature of Cisco AsyncOS Software for Cisco Secure Web Appliance could allow an unauthenticated, remote attacker to bypass authentication policy requirements.\\r\\n\\r\\nThis vulnerability is due to improper validation of user-supplied authentication input in HTTP requests. An attacker could exploit this vulnerability by sending HTTP requests that contain specific authentication requests to an affected device. A successful exploit could allow the attacker to bypass policy enforcement on the device. There is no direct impact to the Cisco Secure Web Appliance. However, as a result of exploiting this vulnerability, an attacker could send HTTP requests that should be restricted through the device.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"cwe\", \"cweId\": \"CWE-305\", \"description\": \"Authentication Bypass by Primary Weakness\"}]}], \"providerMetadata\": {\"orgId\": \"d1c1063e-7a18-46af-9102-31f8928bc633\", \"shortName\": \"cisco\", \"dateUpdated\": \"2026-04-16T19:05:18.524Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2026-20152\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-04-16T19:05:18.524Z\", \"dateReserved\": \"2025-10-08T11:59:15.386Z\", \"assignerOrgId\": \"d1c1063e-7a18-46af-9102-31f8928bc633\", \"datePublished\": \"2026-04-15T16:03:43.828Z\", \"assignerShortName\": \"cisco\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
Sightings
| Author | Source | Type | Date |
|---|
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.
Loading…
Loading…