CVE-2019-25466
CVE-2019-25466 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-787.
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-2019-19737
- Weakness: CWE-787
- Published:
- Last modified:
Description
Easy File Sharing Web Server 7.2 contains a local structured exception handling buffer overflow vulnerability that allows local attackers to execute arbitrary code by creating a malicious username. Attackers can craft a username with a payload containing 4059 bytes of padding followed by a nseh value and seh pointer to trigger the overflow when adding a new user account.
Frequently asked questions
- What is CVE-2019-25466?
- Easy File Sharing Web Server 7.2 contains a local structured exception handling buffer overflow vulnerability that allows local attackers to execute arbitrary code by creating a malicious username. Attackers can craft a username with a payload containing 4059 bytes of padding followed by a nseh value and seh pointer to trigger the overflow when adding a new user account.
- How severe is CVE-2019-25466?
- CVE-2019-25466 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-2019-25466 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-2019-25466?
- 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-2019-25466 have an EU (EUVD) identifier?
- Yes. CVE-2019-25466 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2019-19737.
- When was CVE-2019-25466 published?
- CVE-2019-25466 was published on 2026-03-11 and last updated on 2026-06-17.
References
- https://www.exploit-db.com/exploits/47411
- https://www.vulncheck.com/advisories/easy-file-sharing-web-server-local-seh-overflow
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