FKIE_CVE-2026-20310
Vulnerability from fkie_nvd - Published: 2026-08-05 17:16 - Updated: 2026-08-06 15:44
Severity
Summary
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Catalyst SD-WAN engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities.
The vulnerabilities tracked by CVE-2026-20310 are related to improper link resolution before file access issues that are grouped under the Common Weakness Enumeration (CWE) CWE-59.
References
Impacted products
| Vendor | Product | Version |
|---|
{
"affected": [
{
"affectedData": [
{
"defaultStatus": "unknown",
"product": "Cisco Catalyst SD-WAN Controller",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "20.6.4"
},
{
"status": "affected",
"version": "20.9.2"
},
{
"status": "affected",
"version": "20.3.6"
},
{
"status": "affected",
"version": "20.7.2"
},
{
"status": "affected",
"version": "20.7.1"
},
{
"status": "affected",
"version": "20.5.1"
},
{
"status": "affected",
"version": "20.6.2"
},
{
"status": "affected",
"version": "19.3.0"
},
{
"status": "affected",
"version": "20.6.1"
},
{
"status": "affected",
"version": "17.2.4"
},
{
"status": "affected",
"version": "18.2.0"
},
{
"status": "affected",
"version": "18.4.6"
},
{
"status": "affected",
"version": "19.1.0"
},
{
"status": "affected",
"version": "19.2.4"
},
{
"status": "affected",
"version": "19.2.929"
},
{
"status": "affected",
"version": "18.3.8"
},
{
"status": "affected",
"version": "18.4.303"
},
{
"status": "affected",
"version": "18.3.7"
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{
"status": "affected",
"version": "18.4.1"
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{
"status": "affected",
"version": "19.2.097"
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{
"status": "affected",
"version": "19.2.0"
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{
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{
"status": "affected",
"version": "18.3.6"
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{
"status": "affected",
"version": "20.4.2"
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{
"status": "affected",
"version": "19.0.0"
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{
"status": "affected",
"version": "20.9.1"
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{
"status": "affected",
"version": "20.3.5"
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{
"status": "affected",
"version": "20.3.1"
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{
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"version": "18.3.5"
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{
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{
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"version": "18.4.3"
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{
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{
"status": "affected",
"version": "17.2.8"
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{
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{
"status": "affected",
"version": "19.2.2"
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{
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"version": "17.2.5"
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{
"status": "affected",
"version": "18.4.0"
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{
"status": "affected",
"version": "20.4.1.1"
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{
"status": "affected",
"version": "20.1.3"
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{
"status": "affected",
"version": "20.1.2"
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{
"status": "affected",
"version": "17.2.10"
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{
"status": "affected",
"version": "19.2.098"
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{
"status": "affected",
"version": "20.1.1"
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{
"status": "affected",
"version": "17.2.6"
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{
"status": "affected",
"version": "19.2.1"
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{
"status": "affected",
"version": "18.3.4"
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{
"status": "affected",
"version": "20.4.1"
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{
"status": "affected",
"version": "17.2.9"
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{
"status": "affected",
"version": "19.2.31"
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{
"status": "affected",
"version": "19.0.1a"
},
{
"status": "affected",
"version": "18.3.0"
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{
"status": "affected",
"version": "17.2.7"
},
{
"status": "affected",
"version": "18.4.5"
},
{
"status": "affected",
"version": "20.3.4"
},
{
"status": "affected",
"version": "20.3.3"
},
{
"status": "affected",
"version": "20.4.1.2"
},
{
"status": "affected",
"version": "20.3.2"
},
{
"status": "affected",
"version": "18.3.1"
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{
"status": "affected",
"version": "20.1.12"
},
{
"status": "affected",
"version": "19.2.3"
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{
"status": "affected",
"version": "20.10.1"
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{
"status": "affected",
"version": "20.6.5"
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{
"status": "affected",
"version": "20.3.7"
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{
"status": "affected",
"version": "20.9.3"
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{
"status": "affected",
"version": "20.11.1"
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{
"status": "affected",
"version": "20.6.3.2"
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{
"status": "affected",
"version": "20.4.2.3"
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{
"status": "affected",
"version": "20.3.5.1"
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{
"status": "affected",
"version": "20.3.4.3"
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{
"status": "affected",
"version": "20.9.3.1"
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{
"status": "affected",
"version": "20.6.4.1"
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{
"status": "affected",
"version": "20.3.3.2"
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{
"status": "affected",
"version": "20.6.5.2"
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{
"status": "affected",
"version": "20.3.7.1"
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{
"status": "affected",
"version": "20.11.1.1"
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{
"status": "affected",
"version": "20.10.1.1"
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{
"status": "affected",
"version": "20.6.1.2"
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{
"status": "affected",
"version": "20.1.3.1"
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{
"status": "affected",
"version": "20.9.2.2"
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{
"status": "affected",
"version": "20.6.5.3"
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{
"status": "affected",
"version": "20.6.3.3"
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{
"status": "affected",
"version": "20.3.7.2"
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{
"status": "affected",
"version": "20.6.5.4"
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{
"status": "affected",
"version": "20.9.2.3"
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{
"status": "affected",
"version": "20.9.4"
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{
"status": "affected",
"version": "20.12.1"
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{
"status": "affected",
"version": "20.3.8"
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{
"status": "affected",
"version": "20.6.6"
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{
"status": "affected",
"version": "20.12.2"
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{
"status": "affected",
"version": "20.13.1"
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"status": "affected",
"version": "20.9.5"
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{
"status": "affected",
"version": "20.12.3"
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{
"status": "affected",
"version": "20.6.7"
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{
"status": "affected",
"version": "20.9.5.1"
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{
"status": "affected",
"version": "20.14.1"
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{
"status": "affected",
"version": "20.12.3.1"
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{
"status": "affected",
"version": "20.12.4"
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{
"status": "affected",
"version": "20.15.1"
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{
"status": "affected",
"version": "20.9.6"
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{
"status": "affected",
"version": "20.6.8"
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{
"status": "affected",
"version": "20.16.1"
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{
"status": "affected",
"version": "20.9.5.3"
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{
"status": "affected",
"version": "20.12.4.1"
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{
"status": "affected",
"version": "20.15.2"
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"status": "affected",
"version": "20.12.5"
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{
"status": "affected",
"version": "20.9.7"
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{
"status": "affected",
"version": "20.15.3"
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{
"status": "affected",
"version": "20.12.5.1"
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{
"status": "affected",
"version": "20.12.5.2"
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{
"status": "affected",
"version": "20.15.4"
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{
"status": "affected",
"version": "20.9.7.1"
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{
"status": "affected",
"version": "20.18.1"
},
{
"status": "affected",
"version": "20.12.6"
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{
"status": "affected",
"version": "20.9.8"
},
{
"status": "affected",
"version": "20.15.4.1"
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{
"status": "affected",
"version": "20.18.2"
},
{
"status": "affected",
"version": "26.1.1"
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{
"status": "affected",
"version": "20.15.4.2"
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{
"status": "affected",
"version": "20.18.2.1"
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{
"status": "affected",
"version": "20.12.5.3"
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{
"status": "affected",
"version": "20.12.6.1"
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{
"status": "affected",
"version": "20.9.8.2"
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{
"status": "affected",
"version": "20.15.5"
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{
"status": "affected",
"version": "20.18.3"
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{
"status": "affected",
"version": "20.12.7"
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{
"status": "affected",
"version": "20.9.9"
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{
"status": "affected",
"version": "20.18.2.2"
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{
"status": "affected",
"version": "20.12.5.4"
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{
"status": "affected",
"version": "20.12.7.1"
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{
"status": "affected",
"version": "20.15.5.1"
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{
"status": "affected",
"version": "20.15.4.3"
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{
"status": "affected",
"version": "20.12.6.2"
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{
"status": "affected",
"version": "20.15.5.2"
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{
"status": "affected",
"version": "20.15.4.4"
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{
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"version": "26.1.1.1"
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{
"status": "affected",
"version": "20.9.9.1"
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{
"status": "affected",
"version": "20.18.3.1"
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{
"status": "affected",
"version": "26.1.1.2"
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{
"status": "affected",
"version": "20.15.4.5"
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{
"status": "affected",
"version": "20.15.5.3"
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{
"status": "affected",
"version": "20.12.7.2"
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{
"status": "affected",
"version": "20.9.9.2"
}
]
},
{
"defaultStatus": "unknown",
"product": "Cisco Catalyst SD-WAN Manager",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "20.1.12"
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{
"status": "affected",
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{
"status": "affected",
"version": "18.4.4"
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{
"status": "affected",
"version": "18.4.5"
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{
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{
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{
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{
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{
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{
"status": "affected",
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{
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{
"status": "affected",
"version": "19.2.0"
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
"status": "affected",
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{
"status": "affected",
"version": "17.2.7"
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{
"status": "affected",
"version": "17.2.4"
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{
"status": "affected",
"version": "18.3.0"
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{
"status": "affected",
"version": "19.2.3"
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{
"status": "affected",
"version": "18.4.501_ES"
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{
"status": "affected",
"version": "20.3.1"
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{
"status": "affected",
"version": "20.1.2"
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{
"status": "affected",
"version": "19.2.929"
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{
"status": "affected",
"version": "19.2.31"
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{
"status": "affected",
"version": "20.3.2"
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{
"status": "affected",
"version": "19.2.32"
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{
"status": "affected",
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{
"status": "affected",
"version": "20.3.2.1"
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{
"status": "affected",
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{
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"version": "18.4.6"
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{
"status": "affected",
"version": "20.1.2_937"
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{
"status": "affected",
"version": "20.4.1"
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{
"status": "affected",
"version": "20.3.2_928"
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{
"status": "affected",
"version": "20.3.2_929"
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{
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{
"status": "affected",
"version": "20.3.2.1_930"
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{
"status": "affected",
"version": "19.2.4"
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{
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{
"status": "affected",
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{
"status": "affected",
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{
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{
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{
"status": "affected",
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{
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{
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{
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{
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"version": "20.3.3.1.2"
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{
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{
"status": "affected",
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{
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{
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{
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{
"status": "affected",
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{
"status": "affected",
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{
"status": "affected",
"version": "20.3.4"
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{
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{
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{
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{
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{
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{
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{
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{
"status": "affected",
"version": "20.6.0.18.4"
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{
"status": "affected",
"version": "20.4.2.0.2"
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{
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"version": "20.3.3.0.16"
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{
"status": "affected",
"version": "20.3.4.0.5"
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{
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{
"status": "affected",
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{
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{
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{
"status": "affected",
"version": "20.7.1"
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{
"status": "affected",
"version": "20.6.2.1"
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{
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{
"status": "affected",
"version": "20.5.1.1"
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{
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{
"status": "affected",
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{
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{
"status": "affected",
"version": "20.3.813"
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{
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{
"status": "affected",
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{
"status": "affected",
"version": "20.5.1.2"
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{
"status": "affected",
"version": "20.3.4.2"
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{
"status": "affected",
"version": "20.3.814"
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{
"status": "affected",
"version": "20.4.2.2"
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{
"status": "affected",
"version": "20.6.2.2"
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{
"status": "affected",
"version": "20.3.4.2.1"
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{
"status": "affected",
"version": "20.7.1.1"
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{
"status": "affected",
"version": "20.3.4.1.2"
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{
"status": "affected",
"version": "20.6.2.2.2"
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{
"status": "affected",
"version": "20.3.4.0.20"
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{
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{
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{
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{
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{
"status": "affected",
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{
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{
"status": "affected",
"version": "20.6.2.2.7"
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{
"status": "affected",
"version": "20.6.3"
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{
"status": "affected",
"version": "20.3.4.2.2"
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{
"status": "affected",
"version": "20.4.2.2.4"
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{
"status": "affected",
"version": "20.7.1.0.2"
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{
"status": "affected",
"version": "20.8.1"
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{
"status": "affected",
"version": "20.3.5.0.8"
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{
"status": "affected",
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{
"status": "affected",
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{
"status": "affected",
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{
"status": "affected",
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{
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{
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{
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{
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"version": "20.7.2"
},
{
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},
{
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"version": "20.6.3.0.11"
},
{
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"version": "20.6.3.1"
},
{
"status": "affected",
"version": "20.6.3.0.14"
},
{
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"version": "20.6.4"
},
{
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"version": "20.9.1"
},
{
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"version": "20.6.3.0.19"
},
{
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"version": "20.6.3.0.18"
},
{
"status": "affected",
"version": "20.3.6"
},
{
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},
{
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"version": "20.6.3.0.23"
},
{
"status": "affected",
"version": "20.6.4.0.4"
},
{
"status": "affected",
"version": "20.6.3.0.25"
},
{
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"version": "20.6.5"
},
{
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},
{
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{
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{
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{
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{
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{
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{
"status": "affected",
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{
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},
{
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},
{
"status": "affected",
"version": "20.10.1_LI_Images"
},
{
"status": "affected",
"version": "20.9.2_LI_Images"
},
{
"status": "affected",
"version": "20.3.7"
},
{
"status": "affected",
"version": "20.9.3"
},
{
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"version": "20.6.5.1"
},
{
"status": "affected",
"version": "20.11.1"
},
{
"status": "affected",
"version": "20.11.1_LI_Images"
},
{
"status": "affected",
"version": "20.9.3_LI_ Images"
},
{
"status": "affected",
"version": "20.6.3.1.1"
},
{
"status": "affected",
"version": "20.9.3.0.2"
},
{
"status": "affected",
"version": "20.6.5.1.2"
},
{
"status": "affected",
"version": "20.9.3.0.3"
},
{
"status": "affected",
"version": "20.4.2.3"
},
{
"status": "affected",
"version": "20.6.3.2"
},
{
"status": "affected",
"version": "20.6.4.1"
},
{
"status": "affected",
"version": "20.6.3.0.38"
},
{
"status": "affected",
"version": "20.6.3.0.39"
},
{
"status": "affected",
"version": "20.3.5.1"
},
{
"status": "affected",
"version": "20.3.4.3"
},
{
"status": "affected",
"version": "20.9.3.1"
},
{
"status": "affected",
"version": "20.3.3.2"
},
{
"status": "affected",
"version": "20.6.5.2"
},
{
"status": "affected",
"version": "20.3.7.1"
},
{
"status": "affected",
"version": "20.10.1.1"
},
{
"status": "affected",
"version": "20.6.5.2.1"
},
{
"status": "affected",
"version": "20.3.4.0.25"
},
{
"status": "affected",
"version": "20.6.2.2.4"
},
{
"status": "affected",
"version": "20.6.1.2"
},
{
"status": "affected",
"version": "20.11.1.1"
},
{
"status": "affected",
"version": "20.9.3.0.5"
},
{
"status": "affected",
"version": "20.3.4.0.26"
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{
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{
"status": "affected",
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{
"status": "affected",
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},
{
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{
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{
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{
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},
{
"status": "affected",
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},
{
"status": "affected",
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},
{
"status": "affected",
"version": "20.6.5.1.5"
},
{
"status": "affected",
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},
{
"status": "affected",
"version": "20.6.4.0.19"
},
{
"status": "affected",
"version": "20.6.5.1.6"
},
{
"status": "affected",
"version": "20.9.3.0.8"
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{
"status": "affected",
"version": "20.6.3.3"
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{
"status": "affected",
"version": "20.3.7.2"
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{
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{
"status": "affected",
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{
"status": "affected",
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{
"status": "affected",
"version": "20.6.4.2"
},
{
"status": "affected",
"version": "20.6.5.5"
},
{
"status": "affected",
"version": "20.9.3.2"
},
{
"status": "affected",
"version": "20.11.1.2"
},
{
"status": "affected",
"version": "20.6.3.4"
},
{
"status": "affected",
"version": "20.10.1.2"
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{
"status": "affected",
"version": "20.6.5.1.9"
},
{
"status": "affected",
"version": "20.9.3.0.16"
},
{
"status": "affected",
"version": "20.6.3.0.45"
},
{
"status": "affected",
"version": "20.6.5.1.10"
},
{
"status": "affected",
"version": "20.9.3.0.17"
},
{
"status": "affected",
"version": "20.6.5.2.4"
},
{
"status": "affected",
"version": "20.6.4.0.21"
},
{
"status": "affected",
"version": "20.9.3.0.18"
},
{
"status": "affected",
"version": "20.6.3.0.46"
},
{
"status": "affected",
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{
"status": "affected",
"version": "20.9.2.3"
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{
"status": "affected",
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{
"status": "affected",
"version": "20.9.3.0.21"
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{
"status": "affected",
"version": "20.9.3.0.20"
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{
"status": "affected",
"version": "20.9.4_LI_Images"
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{
"status": "affected",
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{
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{
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{
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{
"status": "affected",
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{
"status": "affected",
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{
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{
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{
"status": "affected",
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{
"status": "affected",
"version": "20.9.3.0.25"
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{
"status": "affected",
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{
"status": "affected",
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},
{
"status": "affected",
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{
"status": "affected",
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{
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{
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{
"status": "affected",
"version": "20.9.3.0.29"
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{
"status": "affected",
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{
"status": "affected",
"version": "20.12.2_LI_Images"
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{
"status": "affected",
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},
{
"status": "affected",
"version": "20.13.1_LI_Images"
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{
"status": "affected",
"version": "20.9.4.0.4"
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{
"status": "affected",
"version": "20.13.1"
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{
"status": "affected",
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{
"status": "affected",
"version": "20.9.5"
},
{
"status": "affected",
"version": "20.9.5_LI_Images"
},
{
"status": "affected",
"version": "20.12.3_LI_Images"
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{
"status": "affected",
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{
"status": "affected",
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{
"status": "affected",
"version": "20.6.7"
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{
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{
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{
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{
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{
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"version": "20.14.1_LI_Images"
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{
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{
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{
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{
"status": "affected",
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
"status": "affected",
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{
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{
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{
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{
"status": "affected",
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},
{
"status": "affected",
"version": "20.9.7"
},
{
"status": "affected",
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},
{
"status": "affected",
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},
{
"status": "affected",
"version": "20.12.501"
},
{
"status": "affected",
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},
{
"status": "affected",
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{
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},
{
"status": "affected",
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},
{
"status": "affected",
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},
{
"status": "affected",
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},
{
"status": "affected",
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},
{
"status": "affected",
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},
{
"status": "affected",
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},
{
"status": "affected",
"version": "20.18.1"
},
{
"status": "affected",
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},
{
"status": "affected",
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},
{
"status": "affected",
"version": "20.12.6"
},
{
"status": "affected",
"version": "20.12.5.1.01"
},
{
"status": "affected",
"version": "26.0.1"
},
{
"status": "affected",
"version": "20.9.8"
},
{
"status": "affected",
"version": "20.9.8_LI_Images"
},
{
"status": "affected",
"version": "20.18.2"
},
{
"status": "affected",
"version": "20.15.4.1_LI_Images"
},
{
"status": "affected",
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},
{
"status": "affected",
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},
{
"status": "affected",
"version": "26.1.1"
},
{
"status": "affected",
"version": "26.1.1_LI_Images"
},
{
"status": "affected",
"version": "20.18.2.1_LI_Images"
},
{
"status": "affected",
"version": "20.18.2.1"
},
{
"status": "affected",
"version": "20.15.4.2_LI_Images"
},
{
"status": "affected",
"version": "20.15.4.2"
},
{
"status": "affected",
"version": "20.12.6.1"
},
{
"status": "affected",
"version": "20.12.6.1_LI_Images"
},
{
"status": "affected",
"version": "20.12.5.3"
},
{
"status": "affected",
"version": "20.12.5.3_LI_Images"
},
{
"status": "affected",
"version": "20.9.8.2_LI_Images"
},
{
"status": "affected",
"version": "20.9.8.2"
},
{
"status": "affected",
"version": "20.18.3"
},
{
"status": "affected",
"version": "20.18.3_LI_Images"
},
{
"status": "affected",
"version": "20.15.5"
},
{
"status": "affected",
"version": "20.15.5_LI_Images"
},
{
"status": "affected",
"version": "20.12.7"
},
{
"status": "affected",
"version": "20.12.7_LI_Images"
},
{
"status": "affected",
"version": "20.9.9"
},
{
"status": "affected",
"version": "20.9.9_LI_Images"
},
{
"status": "affected",
"version": "20.18.2.2"
},
{
"status": "affected",
"version": "20.18.2.2_LI_Images"
},
{
"status": "affected",
"version": "20.12.5.4"
},
{
"status": "affected",
"version": "20.12.5.4_LI_ Images"
},
{
"status": "affected",
"version": "20.12.7.1_LI_Images"
},
{
"status": "affected",
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},
{
"status": "affected",
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},
{
"status": "affected",
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{
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{
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},
{
"status": "affected",
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},
{
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{
"status": "affected",
"version": "20.15.5.2"
},
{
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},
{
"status": "affected",
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},
{
"status": "affected",
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},
{
"status": "affected",
"version": "20.15.4.4_LI_Images"
},
{
"status": "affected",
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},
{
"status": "affected",
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},
{
"status": "affected",
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},
{
"status": "affected",
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},
{
"status": "affected",
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{
"status": "affected",
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},
{
"status": "affected",
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},
{
"status": "affected",
"version": "20.15.4.5"
},
{
"status": "affected",
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},
{
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},
{
"status": "affected",
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},
{
"status": "affected",
"version": "20.12.7.2_LI_Images"
},
{
"status": "affected",
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},
{
"status": "affected",
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},
{
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},
{
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]
}
],
"source": "psirt@cisco.com"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "As part of Cisco\u0027s ongoing commitment to proactive security and product quality, the Cisco Catalyst SD-WAN engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities.\r\n\r\nThe vulnerabilities tracked by CVE-2026-20310 are related to improper link resolution before file access issues that are grouped under the Common Weakness Enumeration (CWE) CWE-59."
}
],
"id": "CVE-2026-20310",
"lastModified": "2026-08-06T15:44:56.043",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.1,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "HIGH",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 2.3,
"impactScore": 6.0,
"source": "psirt@cisco.com",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-20310",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-08-05T00:00:00+00:00",
"version": "2.0.3"
}
}
]
},
"published": "2026-08-05T17:16:51.520",
"references": [
{
"source": "psirt@cisco.com",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-sdwan-faLcR3K"
}
],
"sourceIdentifier": "psirt@cisco.com",
"vulnStatus": "Awaiting Analysis",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-59"
}
],
"source": "psirt@cisco.com",
"type": "Secondary"
}
]
}
Loading…
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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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