How severe is CVE-2019-18992?

CVE-2019-18992 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2019-18992 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-18992?

CVE-2019-18992 affects Openwrt. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-18992?

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

When was CVE-2019-18992 published?

CVE-2019-18992 was published on 2019-12-03 and last updated on 2026-06-17.

CVE-2019-18992

CVE-2019-18992 is a medium-severity vulnerability in Openwrt with a CVSS 3.x base score of 5.4. 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 5.4)
CVSS v2: 3.5
EPSS exploit prediction: 1% (41st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Openwrt
Published: 2019-12-03
Last modified: 2026-06-17

Description

OpenWrt 18.06.4 allows XSS via these Name fields to the cgi-bin/luci/admin/network/firewall/rules URI: "Open ports on router" and "New forward rule" and "New Source NAT" (this can occur, for example, on a TP-Link Archer C7 device).

Frequently asked questions

What is CVE-2019-18992?: OpenWrt 18.06.4 allows XSS via these Name fields to the cgi-bin/luci/admin/network/firewall/rules URI: "Open ports on router" and "New forward rule" and "New Source NAT" (this can occur, for example, on a TP-Link Archer C7 device).
How severe is CVE-2019-18992?: CVE-2019-18992 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2019-18992 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-18992?: CVE-2019-18992 affects Openwrt. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-18992?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-18992 published?: CVE-2019-18992 was published on 2019-12-03 and last updated on 2026-06-17.

References

https://github.com/openwrt/luci/commit/3961268597abba4c2b231790cb4aa7936e73cdf8

Affected products (1)

cpe:2.3:o:openwrt:openwrt:18.06.4:*:*:*:*:*:*:*

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