TP-Link Multiple Archer Devices Directory Traversal Vulnerability

CheckOps priority index

7.9/10 Patch within 7 days

Severity7.5

Probability8.4

Exploitation4/5

Severity = CVSS. Probability = EPSS (FIRST). Exploitation = public signals: KEV, EUVD, ransomware, EPSS above 10 %, no account required.

EPSS · today 83.9% higher than 99.7% of CVEs

CVSS 3.1 7.5 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:

Exploited for 1,684 days 25 Mar 2022

CISA due date 15 Apr 2022 for US federal agencies

Exploitation probability EPSS · FIRST

EPSS probability (%)Percentile among all CVEs

Exploitation signals 4 / 5

KEV catalog (CISA)25 Mar 2022
Exploited in EUVD (ENISA)25 Mar 2022
Used by ransomwareno
EPSS above 10 %83.9%
No account, over the networkyes

What to do

Fix

Apply the vendor’s fix as soon as it is available.

CISA guidance: Apply updates per vendor instructions.

Meanwhile

Take the service off the internet or restrict access to it, watch the logs and look for signs of compromise.

Manufacturers (CRA)

Exploited vulnerability in your product: early warning to ENISA within 24 h, then notification within 72 h (Article 14 of the Cyber Resilience Act). The CRA explained

Description ENISA EUVD

Directory traversal vulnerability in TP-LINK Archer C5 (1.2) with firmware before 150317, C7 (2.0) with firmware before 150304, and C8 (1.0) with firmware before 150316, Archer C9 (1.0), TL-WDR3500 (1.0), TL-WDR3600 (1.0), and TL-WDR4300 (1.0) with firmware before 150302, TL-WR740N (5.0) and TL-WR741ND (5.0) with firmware before 150312, and TL-WR841N (9.0), TL-WR841N (10.0), TL-WR841ND (9.0), and TL-WR841ND (10.0) with firmware before 150310 allows remote attackers to read arbitrary files via a .. (dot dot) in the PATH_INFO to login/.

Affected products

Multiple Archer Devices

Weaknesses (CWE)

CWE-22

Open source packages OSV

Affected libraries according to OSV, with fixed versions.

Timeline

17 Apr 2015
Published
25 Mar 2022
Exploitation reported (ENISA)
25 Mar 2022
Added to the KEV catalog
15 Apr 2022
CISA remediation due date
26 Sept 2026
EPSS peak: 83.9%

Other exploited vulnerabilities from the same vendor

CVE-2025-9377TP-Link Archer C7(EU) and TL-WR841N/ND(MS) OS Command Injection Vulnerability
6.5 · Background exploitation
CVE-2023-50224TP-Link TL-WR841N Authentication Bypass by Spoofing Vulnerability
5.0 · Background exploitation
CVE-2020-24363TP-link TL-WA855RE Missing Authentication for Critical Function Vulnerability
6.0 · Background exploitation
CVE-2023-33538TP-Link Multiple Routers Command Injection Vulnerability
6.6 · Background exploitation
CVE-2023-1389TP-Link Archer AX-21 Command Injection Vulnerability
8.3 · Background exploitation