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CVE-2024-20253 is a critical remote code execution vulnerability affecting multiple Cisco Unified Communications and Contact Center Solutions products. The flaw is caused by improper processing of user-provided data while it is being read into memory. A remote attacker can exploit the issue by sending a crafted message to a listening port on an affected device. Successful exploitation allows arbitrary command execution on the underlying operating system in the security context of the web services user. Because the attacker gains operating system access, the compromise can be extended to obtain root access on the affected device.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
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.
7 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A previously patched Cisco Unified CM vulnerability that enabled threat actors to gain root privileges; mentioned only as background.
A Cisco Unified CM flaw that enabled attackers to gain root access to vulnerable systems.
Unauthenticated remote code execution (RCE) vulnerability in the web-based management interface of Cisco Unified Communications products due to improper input validation, enabling arbitrary command execution on the underlying OS and potentially full system compromise.
Critical remote code execution vulnerability in Cisco Unified Communications and Contact Center Solutions caused by improper parsing of user-supplied data when reading into memory, allowing an unauthenticated remote attacker to execute arbitrary commands by sending a crafted message to a listening port.
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.