Threats / Cisco / CVE-2026-20182
CVE-2026-20182
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-06-22
Cisco Catalyst SD-WAN vulnerability
Cisco Catalyst SD-WAN contains an authentication bypass vulnerability allowing unauthenticated remote attackers to gain administrative privileges.
Verdict
Today item — known-exploited.
An unauthenticated remote attacker can bypass authentication mechanisms in Cisco Catalyst SD-WAN Controller & Manager to obtain administrative access, enabling full system compromise. Active exploitation observed in the wild.
01
Is it exploitable?
— the evidence, ranked above the scoreExploit available
Fully weaponized — public exploit code is cataloged for this vulnerability.We link the existence of the exploit; we do not host or redistribute payloads.
Reported exploitation
5 independent public reports of in-the-wild exploitation are cataloged.Distinct reporting sources (vendor, incident response, government); open them for the underlying claims.
Exploited in the wild
Listed in the CISA Known Exploited Vulnerabilities catalog (added 2026-05-14).
Probability (EPSS)
EPSS 0.76286 — modeled likelihood of exploitation activity.EPSS is a daily-changing model output — open the source for today's value.
Severity / affected
Affected: Cisco, Catalyst SD-WAN. Confirm exact fixed builds in the vendor advisory.
Weakness (CWE)
Mapped to CWE-287 Improper Authentication — weakness family: Authentication.CWE assignment from the public NVD record; the weakness class drives how the flaw is exploited.
02
Who’s exploiting it?
— attribution turns risk into urgencyAttribution not established
No confirmed (advisory-backed) threat-actor attribution is established for this record. Absence of a named actor is not absence of compromise — see Coverage & confidence.
03
Why it matters
— the attack path, told twice: adversary, then board1
Front door — unauthenticated access narrative 1
Attacker
I send a crafted request to the SD-WAN management interface without valid credentials.
Business
Authentication controls fail to validate the request origin or identity.
2
Keys to the kingdom — privilege/identity takeover narrative 2
Attacker
I bypass the authentication check and gain access to administrative functions.
Business
Attacker obtains privileged access to network infrastructure management systems.
3
Lateral reach — past segmentation narrative 3
Attacker
I modify SD-WAN policies, routing rules, or controller configurations to redirect traffic or establish persistence.
Business
Wide-area network traffic can be intercepted, rerouted, or monitored; business continuity and data confidentiality compromised.
04
What to do
— defensible action- Remediate per the vendor advisory — confirm the fixed build for your version and verify exposure.1
Say it to the boardA vulnerability with this evidence profile is a defensible budget line, not a backlog ticket — fund the change against the proof above.
05