CVE-2018-3951
CVE-2018-3951 is a high-severity vulnerability in Tp-link Tl-r600vpn Firmware with a CVSS 3.x base score of 7.2. 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-119.
Key facts
- Severity: High (CVSS 3.x base score 7.2)
- CVSS v2: 6.5
- EPSS exploit prediction: 4% (90th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-119
- Affected product: Tp-link Tl-r600vpn Firmware
- Published:
- Last modified:
Description
An exploitable remote code execution vulnerability exists in the HTTP header-parsing function of the TP-Link TL-R600VPN HTTP Server. A specially crafted HTTP request can cause a buffer overflow, resulting in remote code execution on the device. An attacker can send an authenticated HTTP request to trigger this vulnerability.
Frequently asked questions
- What is CVE-2018-3951?
- An exploitable remote code execution vulnerability exists in the HTTP header-parsing function of the TP-Link TL-R600VPN HTTP Server. A specially crafted HTTP request can cause a buffer overflow, resulting in remote code execution on the device. An attacker can send an authenticated HTTP request to trigger this vulnerability.
- How severe is CVE-2018-3951?
- CVE-2018-3951 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2018-3951 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2018-3951?
- CVE-2018-3951 affects Tp-link Tl-r600vpn Firmware. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2018-3951?
- 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.
- When was CVE-2018-3951 published?
- CVE-2018-3951 was published on 2018-12-01 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:o:tp-link:tl-r600vpn_firmware:*:*:*:*:*:*:*:*
More vulnerabilities in Tp-link Tl-r600vpn Firmware
- CVE-2018-3950 — High (CVSS 8.8): An exploitable remote code execution vulnerability exists in the ping and tracert functionality of the TP-Link…
- CVE-2018-3949 — High (CVSS 7.5): An exploitable information disclosure vulnerability exists in the HTTP server functionality of the TP-Link TL-R600VPN.…
- CVE-2018-3948 — High (CVSS 7.5): An exploitable denial-of-service vulnerability exists in the URI-parsing functionality of the TP-Link TL-R600VPN HTTP…
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