LiveActive security incident?Get immediate response
CVE Record

CVE-2018-25304: Free Download Manager 2.0 Built 417 Local Buffer Overflow SEH

Free Download Manager 2.0 Built 417 contains a local buffer overflow vulnerability in the URL import functionality that allows attackers to trigger a structured exception handler (SEH) chain exploitation. Attackers can craft a malicious URL file that, when imported through the File > Import > Import lists of downloads menu, causes a buffer overflow in the Location header response that overwrites the SEH chain and executes arbitrary code.

HighCVSS 8.6Not KEV-listedUpdated
Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

CVE-2018-25304 affects Free Download Manager 2.0 Build 417. A malicious download-list or URL file can crash the application and potentially run code when imported. This is mainly a workstation risk involving legacy software and unsafe file handling, not an internet-facing server issue based on the provided sources.

Executive priority

Prioritize discovery and removal from managed endpoints. This is high impact if present, but likely narrow in scope because it affects an old desktop application version and is not reported as actively exploited in the provided sources.

Technical view

The vulnerability is a CWE-120 local buffer overflow in the URL import functionality. The described trigger is importing a crafted URL file through the application’s download-list import feature, causing overflow in Location header handling, SEH overwrite, and possible arbitrary code execution.

Likely exposure

Organizations are exposed if endpoints still run Free Download Manager 2.0 Build 417. Exposure is likely limited to legacy desktops or packaged software inventories. The sources do not identify broader affected versions or server-side exposure.

Exploitation context

A public ExploitDB entry exists, so proof-of-concept exploit information is publicly available. The source bundle does not show CISA KEV listing or cited evidence of active exploitation. Successful exploitation appears to require the vulnerable application processing a crafted imported file.

Researcher notes

Evidence is centered on VulnCheck, ExploitDB, CVE records, and a FileHippo product reference. No vendor patch details, fixed version, indicators of compromise, or active exploitation confirmation are provided. Treat exploit availability as public, but do not assume exploitation in the wild.

Mitigation direction

  • Inventory endpoints for Free Download Manager 2.0 Build 417.
  • Remove the vulnerable legacy version where business use is not required.
  • Check current vendor or distributor guidance for supported replacement versions.
  • Block or discourage importing untrusted download-list or URL files.
  • Use endpoint controls to limit execution from untrusted user content.

Validation and detection

  • Confirm whether Free Download Manager 2.0 Build 417 is installed.
  • Review software inventory for legacy FileHippo-sourced installer packages.
  • Check endpoint alerts for crashes or suspicious behavior involving the application.
  • Verify users cannot import untrusted URL/list files into the application.
  • Document compensating controls if removal is delayed.
Prepared
Confidence
medium
Sources
5

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cwe · low confidence lookup

CWE-120: Exact CWE lookup

Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.

Open ATT&CK lookup
description · low confidence lookup

Execution behavior lookup

The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

Open ATT&CK lookup
cve · low confidence lookup

CVE-2018-25304 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup
Vulnerability profileCVE Program record
Severity
High
CVSS
8.6 (4.0)
Known Exploited
No
Published

Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
0Timeline events
0ADP providers
4Source links

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
8.6CVSS 4.0HighCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:NPrimary CVE score

Vulnerability scoring details

Base CVSS 4.0 score

8.6High
CVSS 4.0 vector shape for CVE-2018-25304Attack VectorAttack ComplexityAttack RequirementsPrivileges RequiredUser InteractionVS ConfidentialityVS IntegrityVS AvailabilitySS ConfidentialitySS IntegritySS Availability

Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Attack Requirements
NonePresent
Privileges Required
NoneLowHigh
User Interaction
NonePassiveActive
VS Confidentiality
HighLowNone
VS Integrity
HighLowNone
VS Availability
HighLowNone
SS Confidentiality
HighLowNone
SS Integrity
HighLowNone
SS Availability
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
FilehippoFree Download Manager2.0Listed
Weakness

CWE details

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.

CWE-120 · source CWE mapping

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.