A vulnerability in Cisco Catalyst SD-WAN Software could allow an unauthenticated, remote attacker to view sensitive information on an affect
Affects Cisco Catalyst SD-WAN Manager regardless of device configuration. Cisco has released software updates that address the vulnerability.
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Listed in CISA KEV
- How many real-world setups can hit the bug, from the vendor's advisory and CISA data. It does not know your setup.What do these mean? →
- Actively exploited
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
Cisco Catalyst SD-WAN Software is affected by this vulnerability. A remote attacker could potentially view sensitive information on the underlying operating system of an affected device.
Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.
Read the original description
A vulnerability in Cisco Catalyst SD-WAN Software could allow an unauthenticated, remote attacker to view sensitive information on an affected system. This vulnerability is due to insufficient file system restrictions. An authenticated attacker with netadmin privileges could exploit this vulnerability by accessing the vshell of an affected system. A successful exploit could allow the attacker to read sensitive information on the underlying operating system.
Timeline
- CVE published
- Added to CISA KEV
CISA has evidence of exploitation in the wild
- Record last updated
- CISA remediation deadline
Due date for US federal agencies to patch
- EPSS reached 10%
FIRST estimates at least a 10% chance of exploitation in the next 30 days
Affected versions
- Cisco Cisco Catalyst SD-WAN Manager
17.2.6, 17.2.7, 17.2.8, 17.2.9, 17.2.10, 17.2.4, 17.2.5, 18.3.1.1, 18.3.3.1, 18.3.3, 18.3.4, 18.3.5, 18.3.7, 18.3.8, 18.3.6.1, 18.3.1, 18.3.0, 18.4.0.1, 18.4.3, 18.4.302, 18.4.303, 18.4.4, 18.4.5, 18.4.0, 18.4.1, 18.4.6, 19.2.0, 19.2.097, 19.2.099, 19.2.1, and 131 more
References 1
sec.cloudapps.cisco.com
Questions about CVE-2026-20133
What does this mean?
The flaw can let an attacker read sensitive information on the underlying operating system of the affected product. The description says the attacker does not need to log in first.Source: sec.cloudapps.cisco.com
Am I affected, and how do I check?
The vulnerability affects Cisco Catalyst SD-WAN Manager regardless of device configuration. The affected version ranges are not listed in the checked facts, so compare your Manager version against the version list in Cisco's advisory.Source: sec.cloudapps.cisco.com
What should I do about it?
Cisco has released software updates that address this vulnerability. The fixed version is not named in the checked facts, so check Cisco's advisory for the release to install.Source: sec.cloudapps.cisco.com
Is it being exploited?
Yes. CISA added it to its Known Exploited Vulnerabilities catalog on 2026-04-20, which means it has evidence of attacks. No public exploit code is tracked.Source: cisa.gov, cve.now feed data
What if there's no patch?
No workaround is listed in the checked facts. Until you can apply a software update, the sources provide no documented mitigation to use.Source: sec.cloudapps.cisco.com
Why do the sources disagree?
The description says the attacker is unauthenticated, meaning no login is needed. The CVSS vector instead records that low privileges are required, so the two sources do not match on whether authentication is needed.Source: sec.cloudapps.cisco.com