How severe is CVE-2018-15700?

CVE-2018-15700 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2018-15700 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-15700?

CVE-2018-15700 affects Tp-link Tl-wrn841n Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-15700?

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

When was CVE-2018-15700 published?

CVE-2018-15700 was published on 2018-10-01 and last updated on 2026-06-17.

CVE-2018-15700

CVE-2018-15700 is a medium-severity vulnerability in Tp-link Tl-wrn841n Firmware with a CVSS 3.x base score of 6.5. 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-20.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 6.1
EPSS exploit prediction: 1% (44th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Tp-link Tl-wrn841n Firmware
Published: 2018-10-01
Last modified: 2026-06-17

Description

The web interface in TP-Link TL-WRN841N 0.9.1 4.16 v0348.0 is vulnerable to a denial of service when an unauthenticated LAN user sends a crafted HTTP header containing an unexpected Referer field.

Frequently asked questions

What is CVE-2018-15700?: The web interface in TP-Link TL-WRN841N 0.9.1 4.16 v0348.0 is vulnerable to a denial of service when an unauthenticated LAN user sends a crafted HTTP header containing an unexpected Referer field.
How severe is CVE-2018-15700?: CVE-2018-15700 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2018-15700 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-15700?: CVE-2018-15700 affects Tp-link Tl-wrn841n Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-15700?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-15700 published?: CVE-2018-15700 was published on 2018-10-01 and last updated on 2026-06-17.

References

https://www.tenable.com/security/research/tra-2018-27

Affected products (1)

cpe:2.3:o:tp-link:tl-wrn841n_firmware:0.9.1_4.16_v0348.0:*:*:*:*:*:*:*

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