How severe is CVE-2019-12195?

CVE-2019-12195 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2019-12195 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-12195?

CVE-2019-12195 affects Tp-link Tl-wr840n Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-12195?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2019-12195 published?

CVE-2019-12195 was published on 2019-05-24 and last updated on 2026-06-17.

CVE-2019-12195

CVE-2019-12195 is a medium-severity vulnerability in Tp-link Tl-wr840n Firmware with a CVSS 3.x base score of 4.8. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 4.8)
CVSS v2: 3.5
EPSS exploit prediction: 2% (76th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Tp-link Tl-wr840n Firmware
Published: 2019-05-24
Last modified: 2026-06-17

Description

TP-Link TL-WR840N v5 00000005 devices allow XSS via the network name. The attacker must log into the router by breaking the password and going to the admin login page by THC-HYDRA to get the network name. With an XSS payload, the network name changed automatically and the internet connection was disconnected. All the users become disconnected from the internet.

Frequently asked questions

What is CVE-2019-12195?: TP-Link TL-WR840N v5 00000005 devices allow XSS via the network name. The attacker must log into the router by breaking the password and going to the admin login page by THC-HYDRA to get the network name. With an XSS payload, the network name changed automatically and the internet connection was disconnected. All the users become disconnected from the internet.
How severe is CVE-2019-12195?: CVE-2019-12195 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2019-12195 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-12195?: CVE-2019-12195 affects Tp-link Tl-wr840n Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-12195?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-12195 published?: CVE-2019-12195 was published on 2019-05-24 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:tp-link:tl-wr840n_firmware:0.9.1_3.16:*:*:*:*:*:*:*

More vulnerabilities in Tp-link Tl-wr840n Firmware

CVE-2022-25064 — Critical (CVSS 9.8): TP-LINK TL-WR840N(ES)_V6.20_180709 was discovered to contain a remote code execution (RCE) vulnerability via the…
CVE-2022-25061 — Critical (CVSS 9.8): TP-LINK TL-WR840N(ES)_V6.20_180709 was discovered to contain a command injection vulnerability via the component…
CVE-2022-25060 — Critical (CVSS 9.8): TP-LINK TL-WR840N(ES)_V6.20_180709 was discovered to contain a command injection vulnerability via the component…
CVE-2021-41653 — Critical (CVSS 9.8): The PING function on the TP-Link TL-WR840N EU v5 router with firmware through TL-WR840N(EU)_V5_171211 is vulnerable to…
CVE-2020-36178 — Critical (CVSS 9.8): oal_ipt_addBridgeIsolationRules on TP-Link TL-WR840N 6_EU_0.9.1_4.16 devices allows OS command injection because a raw…
CVE-2018-11714 — Critical (CVSS 9.8): An issue was discovered on TP-Link TL-WR840N v5 00000005 0.9.1 3.16 v0001.0 Build 170608 Rel.58696n and TL-WR841N v13…

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