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CVE-2024-28986 is a critical Java deserialization vulnerability in SolarWinds Web Help Desk affecting versions 12.4 through 12.8. A remote attacker can submit crafted serialized data to reach unsafe Java object deserialization, enabling execution of attacker-controlled commands on the Web Help Desk host. The vulnerability was assigned a CVSS score of 9.8 and was added to CISA's Known Exploited Vulnerabilities Catalog. Subsequent vulnerabilities, including CVE-2024-28988 and CVE-2025-26399, were reported as bypasses of incomplete fixes for this underlying deserialization issue.
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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.
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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.
41 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An older Java deserialization vulnerability referenced as having been exploited in the wild soon after being patched; CVE-2025-26399 is described as a bypass to it.
Prior SolarWinds Web Help Desk vulnerability whose patches can be bypassed by CVE-2025-26399 (details not provided in the content).
An earlier SolarWinds Web Help Desk vulnerability referenced as the original issue underlying later patch-bypass iterations (including CVE-2024-28988 and CVE-2025-26399).
The original SolarWinds Web Help Desk vulnerability in the lineage that later saw an incomplete fix (CVE-2024-28988) and a subsequent bypass (CVE-2025-26399).
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.