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KerberLoss is an Active Directory Domain Services privilege-escalation vulnerability caused by improper handling of invisible Unicode characters in ServicePrincipalName values. An attacker with permission to modify an account's SPNs can insert Unicode characters that Active Directory accepts but does not reliably process in LDAP filtering and uniqueness validation. This bypasses forest-wide SPN and SPN-alias uniqueness checks introduced to prevent conflicting service identities. The attacker can create SPN values that collide operationally with legitimate explicit or HOST-mapped service identities.
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No valid public exploits. Mallory filtered out 3 candidates as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
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.
20 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An Active Directory privilege escalation and identity-confusion vulnerability that abuses invisible/unfilterable Unicode characters to bypass SPN uniqueness and SPN alias uniqueness checks, enabling conflicting or duplicate SPNs that can cause DoS, NTLM downgrade, and support SPN-jacking style attacks.
An Active Directory Domain Services vulnerability that may allow SYSTEM-level privilege gain and could impact Kerberos authentication behavior, potentially disrupting services or forcing weaker fallback behavior.
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.