Loading vulnerability…
CVE-2025-58726 is an elevation of privilege vulnerability in Windows SMB Server caused by improper access control. Microsoft states that an authorized attacker can exploit the flaw over the network by executing a specially crafted script that coerces a victim machine to connect to an attacker-controlled SMB server and authenticate. Supporting research cited in the content describes the issue as a variant of CVE-2025-33073 and indicates exploitation depends on Service Principal Name (SPN) conditions on the target machine: either a ghost SPN must exist, or the attacker must be able to add an SPN to the target machine account. Successful exploitation can lead to the attacker obtaining SYSTEM-level privileges on the target.
Mallory correlates every CVE against your assets, your vendors, and active adversary campaigns. Know which vulnerabilities matter for you, not just which ones are loud.
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.
1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos.
Repository contains a single functional Python script, `userenum-cldap.py`, plus a large README describing a broader AD attack framework called AD AutoPwn. The actual code present here is much narrower in scope than the README: it is a standalone Python 3 CLDAP-based Active Directory username enumeration utility. The script takes three arguments: a domain controller IP, the target AD DNS domain/FQDN, and a username wordlist. It compiles ASN.1 BER definitions for a CLDAP NetLogon search request and response using `asn1tools`, then iterates through each candidate username. For each user, it sends a UDP packet to port 389 on the specified DC and parses the returned NetLogon blob. If the first byte/opcode is not `0x13` (`LOGON_SAM_USER_UNKNOWN_EX`), the script reports the username as valid. This makes it a zero-auth enumeration tool rather than a full exploit delivering code execution or privilege escalation. Repository structure is minimal: 2 files total, with 1 code file. The Python script is the clear entry point. There is no exploit framework metadata, no modular structure, and no embedded post-exploitation payload. Operationally, this is best classified as a proof-of-concept/offensive enumeration utility for pre-auth AD reconnaissance. The README appears to advertise a much larger attack-chain project, but that broader functionality is not implemented in the provided repository contents.
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.
12 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A variant of CVE-2025-33073 affecting the SMB service, requiring either a ghost SPN on the machine or the ability to add an SPN to the target machine account. Its patch added a check that local SMB authentication must originate from a local IP address.
An elevation of privilege vulnerability in Windows SMB Server caused by improper access control, allowing an authorized attacker to gain SYSTEM privileges over a network under specific conditions.
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.