CVE-2018-3948TP-Link Vulnerability
An exploitable denial-of-service vulnerability exists in the URI-parsing functionality of the TP-Link TL-R600VPN HTTP server.
Published Nov 30, 2018 · Updated Nov 21, 2024
Key Facts
Patch immediately- CVE-2018-3948 is a high-severity vulnerability (CVSS 7.5 v3.1) affecting Tl-R600vpn Firmware (Tp-Link), TP-Link.
- It is exploited in the wild, listed in Industry KEV feed since Jan 12, 2022. No public exploit code is known.
- EPSS estimates a 23% probability of exploitation in the next 30 days.
- No fixed version is listed yet; check the vendor advisory for mitigations.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
Scores
CVSS v3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS (30-day exploit likelihood)
23%
Higher than 97.7% of all scored CVEs
Exploit maturity
Exploited (KEV)
ATLAS score
44/100
Publication score, see How it works
Exploitation Verdict
KEV listed
Jan 12, 2022
1139 days after publication
Federal due date
None
No federal due date
Ransomware use
Not reported
Attributed actors
None named
Exploit & Defence Guidance
Exploit maturity
Exploited (KEV)
Public exploit code
0
Proof-of-concept links
In-the-wild evidence
8
Reports of active use
Description
An exploitable denial-of-service vulnerability exists in the URI-parsing functionality of the TP-Link TL-R600VPN HTTP server. A specially crafted URL can cause the server to stop responding to requests, resulting in downtime for the management portal. An attacker can send either an unauthenticated or authenticated web request to trigger this vulnerability.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| Industry KEV feed | Jan 12, 2022 | n/a | Not reported |
Affected Products
3 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Tl-R600vpn FirmwareTp-Link | 1.2.3, 1.3.0 | n/a |
| TP-Link | >= TP-Link TL-R600VPN HWv3 FRNv1.3.0 TP-Link TL-R600VPN HWv2 FRNv1.2.3 | n/a |
Timeline
Publicly disclosed
Nov 30, 2018
Added to Industry KEV feed
Jan 12, 2022
Last updated
Nov 21, 2024
Weakness Type
- CWE-20 Improper Input Validation
References
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
FAQ
Common Questions.
An exploitable denial-of-service vulnerability exists in the URI-parsing functionality of the TP-Link TL-R600VPN HTTP server.
Affected: Tl-R600vpn Firmware (Tp-Link) versions 1.2.3, 1.3.0; TP-Link versions >= TP-Link TL-R600VPN HWv3 FRNv1.3.0 TP-Link TL-R600VPN HWv2 FRNv1.2.3. The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed since Jan 12, 2022.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
Is CVE-2018-3948 On Your Attack Surface?
Brandefense matches it against the products discovered on your perimeter and opens a finding the day a CVE like this is listed.
Request A Demo