What is CVE-2026-20245?

CVE-2026-20245 is Cisco Catalyst SD-WAN Controller Authenticated Privilege Escalation Vulnerability. The supplied enrichment data classifies it as Privilege Esc mapped to CWE-116 CWE-116.

Which versions are affected?

Affected product and version evidence is listed in the product table above. Current public advisories should be checked for exact version scope before patch targeting is finalized.

Is there active exploitation?

Yes: CISA KEV signal present. If exploitation is not confirmed from current sources, teams should document that status and continue monitoring KEV, vendor, and telemetry updates.

Is there a public exploit?

16 public PoC repositories reported; 0 marked weaponized in current dataset. Public exploit or PoC availability should raise triage priority, especially for exposed or business-critical systems.

How can defenders detect it?

Start with EDR process telemetry, host service logs where available. Look for vulnerability-class behavior, product errors, suspicious authentication events, exploit probes, and abnormal process activity based only on evidence that applies to the affected product.

How should teams prioritize it?

Prioritize CVE-2026-20245 using CVSS 7.8, EPSS 25%, KEV status, public PoC status, and asset exposure. Internet-facing, privileged, or business-critical deployments should be handled first.

Are workarounds available?

The supplied mitigation guidance says to apply vendor patches and restrict external exposure until fixed. Fixed-version evidence is listed in the mitigation section above.

Which threat actors are linked publicly?

No public threat actor linkage is confirmed from current sources. Do not attribute exploitation to a threat actor unless the source evidence explicitly supports that linkage.

What should be done in the next 24 hours?

Identify exposed assets running affected vendor/product/version combinations. Treat as emergency remediation because CISA KEV status is present. Search available logs for exploit probes, errors, authentication anomalies, or suspicious child processes matching the vulnerability class. Open remediation tickets with affected assets, owners, evidence status, and detection coverage so decisions are traceable.

CISA KEVhighPrivilege Escpublic exploit

CVE-2026-20245

Cisco Catalyst SD-WAN Controller Authenticated Privilege Escalation Vulnerability

Q: Is it in CISA KEV?

Yes. The supplied enrichment data lists CVE-2026-20245 in CISA KEV with required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.. KEV status should be monitored because it can change after initial disclosure or after exploitation becomes publicly confirmed.

A vulnerability in the CLI of Cisco Catalyst SD-WAN Controller, formerly SD-WAN vSmart, Cisco Catalyst SD-WAN Manager, formerly SD-WAN vManage, and Cisco Catalyst SD-WAN Validator, formerly SD-WAN vBond, could allow an authenticated, local attacker to execute arbitrary commands as root by supplying a crafted file to the affected system. This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by uploading a crafted file to the affected system. A successful exploit could allow the attacker to perform command injection attacks on an affected system and elevate their privileges as the root user. To exploit this vulnerability, the attacker must have netadmin privileges on the affected system. This would require valid credentials or exploitation of or . Cisco is not aware of successful exploitation by other methods. Cisco has observed limited cases where the exploitation of this bug resulted in a configuration change pushed to edge devices. Cisco recommends that customers upgrade to the fixed software that is documented in the that was published on May 14, 2026, and verify the configuration of the edge devices.

Published Jun 4, 2026Updated Jul 23, 2026Sources: NVD, Cisco (CNA), CISA, FIRST EPSS, GitHub, GitHub Security Advisory

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the scoring sources call it.

Exploitation

Confirmed

CISA KEV, listed Jun 9, 2026

EPSS

25%

ahead of 98% of scored CVEs

Affects

Cisco

517 products listed

CVSS base

7.8

high

CISA SSVC assessment

Three decision points CISA publishes for the CVEs it assesses · SSVC 2.0.3. A stakeholder decision, not a severity score.

CISA

Exploitation

Active

none · proof-of-concept · active

Automatable

can an attacker script all four kill-chain steps

Technical impact

Total

partial · total control of the vulnerable component

Remediation

The vendor's own words where we have them.

Upgrade Cisco Catalyst SD-WAN Controller to a fixed release. Apply vendor patches per advisory and restrict external exposure of the affected component until patched.

CISA required action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Federal deadline Jun 23, 2026 — passed 61 days ago

First 24 hours

Ordered from the record's own fields — exposure first, because you cannot patch what you have not found.

Identify exposed assets running affected vendor/product/version combinations.
Treat as emergency remediation because CISA KEV status is present.
Search available logs for exploit probes, errors, authentication anomalies, or suspicious child processes matching the vulnerability class.

Affected scope

Vendor, product and version as the advisories word them.

Vendor	Product	Versions	Status
Cisco	Cisco Catalyst SD-WAN Controller	20.6.4	Vulnerable
Cisco	Cisco Catalyst SD-WAN Controller	20.9.2	Vulnerable
Cisco	Cisco Catalyst SD-WAN Controller	20.3.6	Vulnerable
Cisco	Cisco Catalyst SD-WAN Controller	20.7.2	Vulnerable
Cisco	Cisco Catalyst SD-WAN Controller	20.7.1	Vulnerable
Cisco	Cisco Catalyst SD-WAN Controller	20.5.1	Vulnerable
Cisco	Cisco Catalyst SD-WAN Controller	20.6.2	Vulnerable
Cisco	Cisco Catalyst SD-WAN Controller	19.3.0	Vulnerable
Cisco	Cisco Catalyst SD-WAN Controller	20.6.1	Vulnerable
Cisco	Cisco Catalyst SD-WAN Controller	17.2.4	Vulnerable
Cisco	Cisco Catalyst SD-WAN Controller	18.2.0	Vulnerable
Cisco	Cisco Catalyst SD-WAN Controller	18.4.6	Vulnerable

Attack characteristics

The CVSS vector, decoded. It describes the attack, not your exposure to it.

Availability

High

Confidentiality

High

Integrity

High

Scope

Unchanged

Attack Complexity

Low

Attack Vector

Local

Privileges Req

Low

User Interaction

None

Every base score collected

Sources score independently and disagree; each row says who scored it and under which version.

Score	Version	Severity	Expl.	Impact	Source
7.8	CVSS 3.1	high	1.8	5.9	Cisco (CNA), GHSA

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness & attack patterns

CWE-116

Inferred from the weakness class — not observed against this CVE.

CAPEC-233 · Privilege EscalationCAPEC-69 · Target Programs with Elevated Privileges

CISA KEV details

CISA lists a CVE here once it has evidence of exploitation against real targets.

CISAThat month →

Listed

Jun 9, 2026

Federal deadline

Jun 23, 2026

passed 61 days ago

Ransomware use

Unknown

CISA records ransomware use only for campaigns it has confirmed, so “Unknown” means unrecorded, not ruled out. The deadline binds US federal agencies; for everyone else it is a date to argue against.

Public exploit

Capability, not use: code existing is a different claim from anyone running it.

Repositories

Detection

Read off the CVSS vector and the weakness class. Starting points, not rules we have tested.

Review endpoint telemetry for service binary replacement, suspicious service launches, or privilege changes tied to the affected agent.
Monitor for scanner or exploit-pattern traffic after 16 public PoC repositories were reported.

EDR process telemetryhost service logs

Timeline

What happened to this CVE, newest first — with the readings a source repeats on a schedule counted underneath rather than listed.

2026
Added · CVSS 3.1 7.8 (AV:L)
Jul 23, 2026 · NVD
Added to CISA KEV catalog
Jun 9, 2026 · CISA
Added · GHSA-h4c6-cm2m-h5f6 published (high)
Jun 5, 2026 · GitHub Security Advisory
Initial · CVE published
Jun 4, 2026 · NVD

References

5 on the record

sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-privesc-4uxFrdzx
Vendor Advisory
sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-rpa2-v69WY2SW
Vendor Advisory
www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-20245
US Government Resource
nvd.nist.gov/vuln/detail/CVE-2026-20245
NVD, Vendor Advisory
github.com/advisories/GHSA-h4c6-cm2m-h5f6
Exploit, Third Party Advisory

Elsewhere on this site

Ciscoevery CVE for this vendor
June 2026what else CISA listed
Privilege Escsame class
CWE-116other pages naming this weakness

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record1

What should defenders know first?

CVE-2026-20245 is Cisco Catalyst SD-WAN Controller Authenticated Privilege Escalation Vulnerability, a high vulnerability affecting Cisco Catalyst SD-WAN Controller, Cisco Catalyst SD-WAN Manager from Cisco. The current evidence lists it in CISA KEV, and the exploit status is: Yes: CISA KEV signal present. Public exploit evidence is: 16 public PoC repositories reported; 0 marked weaponized in current dataset. The affected-version evidence is listed in the key facts and affected products tables. Defenders should first verify whether exposed or business-critical assets run those versions, then apply vendor patches or mitigations, restrict reachable attack surface, and preserve logs for detection review. CVSS 7.8 describes technical severity, while EPSS 25% helps estimate near-term exploit likelihood; neither replaces asset context. Unknown fields should remain explicit in tickets, and threat actor, IOC, victimology, or payload claims should not be added unless a cited source supports them. Monitor CISA KEV, vendor advisories, NVD changes, public PoC repositories, and internal telemetry for update triggers.