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CVE-2026-20151 is a privilege-escalation vulnerability in the web interface of Cisco Smart Software Manager On-Prem (SSM On-Prem). The flaw is caused by improper transmission of sensitive user information in status messages. A remote authenticated attacker can send a crafted message to an affected SSM On-Prem host and retrieve session credentials from subsequent status messages. Because the exposed information pertains to users currently logged in through the web interface, an attacker with a low-privileged account can use the recovered session credentials to escalate privileges from the System User role to an administrative role. The issue does not affect SSH sessions. Affected versions are Cisco SSM On-Prem 9-202510 and earlier.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
4 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.