CVE-2018-25304
CVE-2018-25304 is a high-severity vulnerability with a CVSS 3.x base score of 8.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-120.
Key facts
- Severity: High (CVSS 3.x base score 8.4)
- CVSS v4: 8.6
- EPSS exploit prediction: 0% (5th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2018-21825
- Weakness: CWE-120
- Published:
- Last modified:
Description
Free Download Manager 2.0 Build 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.
Frequently asked questions
- What is CVE-2018-25304?
- Free Download Manager 2.0 Build 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.
- How severe is CVE-2018-25304?
- CVE-2018-25304 has a CVSS 3.x base score of 8.4, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2018-25304 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2018-25304?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2018-25304 have an EU (EUVD) identifier?
- Yes. CVE-2018-25304 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2018-21825.
- When was CVE-2018-25304 published?
- CVE-2018-25304 was published on 2026-04-29 and last updated on 2026-06-17.
References
- https://filehippo.com/download_free_download_manager/925/
- https://www.exploit-db.com/exploits/44499
- https://www.vulncheck.com/advisories/free-download-manager-built-417-local-buffer-overflow-seh
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