Loading vulnerability…
CVE-2026-58058 is an out-of-bounds read vulnerability in Nmap through version 7.99 affecting IPv6 packet parsing in ipv6_get_data_primitive within libnetutil/netutil.cc. The flaw arises because the IPv6 extension-header walk is not constrained to the captured packet boundary. When Nmap processes a crafted IPv6 response containing a truncated extension header, the parser can advance a pointer past the end of the buffer, after which the remaining-length calculation underflows to a large value. This can cause subsequent out-of-bounds reads and terminate the process during raw IPv6 scans.
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.
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.
6 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.