How severe is CVE-2018-15172?

CVE-2018-15172 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2018-15172 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 8% (94th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-15172?

CVE-2018-15172 affects Tp-link Tl-wr840n Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-15172?

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-2018-15172 published?

CVE-2018-15172 was published on 2018-08-15 and last updated on 2026-06-17.

CVE-2018-15172

CVE-2018-15172 is a high-severity vulnerability in Tp-link Tl-wr840n Firmware with a CVSS 3.x base score of 7.5. 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 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 8% (94th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Tp-link Tl-wr840n Firmware
Published: 2018-08-15
Last modified: 2026-06-17

Description

TP-Link WR840N devices have a buffer overflow via a long Authorization HTTP header.

Frequently asked questions

What is CVE-2018-15172?: TP-Link WR840N devices have a buffer overflow via a long Authorization HTTP header.
How severe is CVE-2018-15172?: CVE-2018-15172 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2018-15172 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 8% (94th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-15172?: CVE-2018-15172 affects Tp-link Tl-wr840n Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-15172?: 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-2018-15172 published?: CVE-2018-15172 was published on 2018-08-15 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:tp-link:tl-wr840n_firmware:0.9.1:*:*:*:*:*:*:*

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