TF
Product
Tl-wr840n Firmware
by Tp-link · last CVE Mar 13, 2026
On CISA KEVExploited in the wild
22
CVEs
1
On KEV
9.8
Max CVSS
0
New 30D
Severity mix
Critical 6High 10Medium 5Low 0
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Add Tl-wr840n Firmware to your stack to get only the CVEs that touch what you run.

CVECVSSEPSSPublishedSummary · affected versions
CVE-2023-39471
8.8
1%
May 3
TP-Link TL-WR841N ated_tp Command Injection Remote Code Execution Vulnerability
Affected: before 231121
CVE-2019-15060
8.8
4%
Aug 22
The traceroute function on the TP-Link TL-WR840N v4 router with firmware through 0.9.1 3.16 is vulnerable to remote code execution via a crafted payload in an IP address input…
Affected: through 0.9.1_3.16
CVE-2022-25062
7.5
4%
Feb 25
TP-LINK TL-WR840N(ES)_V6.20_180709 was discovered to contain an integer overflow via the function dm_checkString
Affected: 6.20_180709
CVE-2018-15840
7.5
2%
Mar 29
TP-Link TL-WR840N devices allow remote attackers to cause a denial of service (networking outage) via fragmented packets, as demonstrated by an "nmap -f" command
Affected: All versions, or not specified
CVE-2018-15172
7.5
8%
Aug 15
TP-Link WR840N devices have a buffer overflow via a long Authorization HTTP header
Affected: 0.9.1
CVE-2021-46122
7.2
2%
Apr 18
Tp-Link TL-WR840N (EU) v6.20 Firmware (0.9.1 4.17 v0001.0 Build 201124 Rel.64328n) is vulnerable to Buffer Overflow via the Password reset feature
Affected: 0.9.1_4.17_v0001.0
CVE-2022-26642
7.2
1%
Mar 28
TP-LINK TL-WR840N(ES)_V6.20 was discovered to contain a buffer overflow via the X_TP_ClonedMACAddress parameter
Affected: 0.9.1.4.16
CVE-2022-26641
7.2
1%
Mar 28
TP-LINK TL-WR840N(ES)_V6.20 was discovered to contain a buffer overflow via the httpRemotePort parameter
Affected: 0.9.1.4.16
CVE-2022-26640
7.2
1%
Mar 28
TP-LINK TL-WR840N(ES)_V6.20 was discovered to contain a buffer overflow via the minAddress parameter
Affected: 0.9.1.4.16
CVE-2022-26639
7.2
1%
Mar 28
TP-LINK TL-WR840N(ES)_V6.20 was discovered to contain a buffer overflow via the DNSServers parameter
Affected: 0.9.1.4.16
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