Unrated

Arbitrary JavaScript Execution in WinZip Trial-Mode HTTP Content

IdentifiersCVE-2020-28003CWE-494

CVE-2020-28003 is an arbitrary code execution issue in WinZip affecting the application's trial-mode content retrieval behavior. When operating in trial mode, WinZip fetches and renders remote HTML content over HTTP rather than HTTPS. Because the content is delivered without transport integrity, a network-positioned attacker can tamper with the response and supply malicious HTML and script content. This allows arbitrary JavaScript to execute within the WinZip process context when the application displays the attacker-modified content.

For your environment

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

A successful attacker can execute arbitrary JavaScript inside the WinZip process. In practical terms, this enables manipulation of application-displayed content and can support further user deception or follow-on compromise, particularly in untrusted network environments where HTTP traffic can be intercepted or modified.

Mitigation

If you can’t patch tonight, do this now.

Until patched versions are deployed, avoid using affected WinZip trial-mode functionality on untrusted networks, reduce exposure to adversary-controlled or interceptable network paths, and enforce network protections that prevent HTTP response tampering. Prefer trusted networks and controls that block or monitor insecure cleartext web requests from the application.

Remediation

Patch, then assume compromise.

Upgrade to WinZip 25 or a later vendor-provided stable release that corrects the insecure HTTP content retrieval behavior.

PUBLIC EXPLOITS

Exploits

No public exploits tracked yet. Mallory keeps watching.

VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

EXPOSURE SURFACE

Affected products & vendors

Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.

VendorProductType

Corel CorporationWinzipapplication

Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.

ACTIVITY FEED

Recent activity

1 sources tracked across advisories and community write-ups. News coverage will land here when it surfaces.

1 SOURCESView more in app

No news coverage yet. Advisories and community discussion only.

What this page doesn’t show

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Exposure mapping

Query your assets running an affected version, and investigate the blast radius.

Threat actor evidence

Every observed campaign linking this CVE to a named adversary.

Associated malware

Malware families riding this exploit, with evidence and IOCs.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity