CVE-2018-25239
CVE-2018-25239 is a medium-severity vulnerability with a CVSS 3.x base score of 6.2. 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-470.
Key facts
- Severity: Medium (CVSS 3.x base score 6.2)
- CVSS v4: 6.9
- EPSS exploit prediction: 0% (8th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2018-21734
- Weakness: CWE-470
- Published:
- Last modified:
Description
Smart VPN 1.1.3.0 contains a denial of service vulnerability that allows local attackers to crash the application by submitting oversized input through the search interface. Attackers can paste a buffer of 2100 characters into the top right search bar to trigger an unhandled exception that crashes the application.
Frequently asked questions
- What is CVE-2018-25239?
- Smart VPN 1.1.3.0 contains a denial of service vulnerability that allows local attackers to crash the application by submitting oversized input through the search interface. Attackers can paste a buffer of 2100 characters into the top right search bar to trigger an unhandled exception that crashes the application.
- How severe is CVE-2018-25239?
- CVE-2018-25239 has a CVSS 3.x base score of 6.2, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2018-25239 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2018-25239?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2018-25239 have an EU (EUVD) identifier?
- Yes. CVE-2018-25239 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2018-21734.
- When was CVE-2018-25239 published?
- CVE-2018-25239 was published on 2026-04-04 and last updated on 2026-06-17.
References
- https://www.exploit-db.com/exploits/46272
- https://www.microsoft.com/store/productId/9NH1G93D4HKR
- https://www.vulncheck.com/advisories/smart-vpn-denial-of-service-via-search
Other CWE-470 (Unsafe Reflection) vulnerabilities
- CVE-2026-42027 — Critical (CVSS 9.8): Arbitrary Class Instantiation via Model Manifest in Apache OpenNLP ExtensionLoader Versions Affected: before…
- CVE-2025-34393 — Critical (CVSS 9.8): Barracuda Service Center, as implemented in the RMM solution, in versions prior to 2025.1.1, does not correctly verify…
- CVE-2025-53693 — Critical (CVSS 9.8): Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection') vulnerability in Sitecore Sitecore…
- CVE-2023-6943 — Critical (CVSS 9.8): Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection') vulnerability in Mitsubishi Electric…
- CVE-2021-31522 — Critical (CVSS 9.8): Kylin can receive user input and load any class through Class.forName(...). This issue affects Apache Kylin 2 version…
- CVE-2019-1003041 — Critical (CVSS 9.8): A sandbox bypass vulnerability in Jenkins Pipeline: Groovy Plugin 2.64 and earlier allows attackers to invoke arbitrary…