How severe is CVE-2017-16959?

CVE-2017-16959 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2017-16959 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-16959?

CVE-2017-16959 primarily affects Tp-link Tl-wvr300 Firmware. In total, 53 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-16959?

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

When was CVE-2017-16959 published?

CVE-2017-16959 was published on 2017-11-27 and last updated on 2026-06-17.

CVE-2017-16959

CVE-2017-16959 is a medium-severity vulnerability in Tp-link Tl-wvr300 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-22.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 4.0
EPSS exploit prediction: 2% (79th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: Tp-link Tl-wvr300 Firmware
Published: 2017-11-27
Last modified: 2026-06-17

Description

The locale feature in cgi-bin/luci on TP-Link TL-WVR, TL-WAR, TL-ER, and TL-R devices allows remote authenticated users to test for the existence of arbitrary files by making an operation=write;locale=%0d request, and then making an operation=read request with a crafted Accept-Language HTTP header, related to the set_sysinfo and get_sysinfo functions in /usr/lib/lua/luci/controller/locale.lua in uhttpd.

Frequently asked questions

What is CVE-2017-16959?: The locale feature in cgi-bin/luci on TP-Link TL-WVR, TL-WAR, TL-ER, and TL-R devices allows remote authenticated users to test for the existence of arbitrary files by making an operation=write;locale=%0d request, and then making an operation=read request with a crafted Accept-Language HTTP header, related to the set_sysinfo and get_sysinfo functions in /usr/lib/lua/luci/controller/locale.lua in uhttpd.
How severe is CVE-2017-16959?: CVE-2017-16959 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2017-16959 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-16959?: CVE-2017-16959 primarily affects Tp-link Tl-wvr300 Firmware. In total, 53 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-16959?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2017-16959 published?: CVE-2017-16959 was published on 2017-11-27 and last updated on 2026-06-17.

References

https://github.com/coincoin7/Wireless-Router-Vulnerability/blob/master/TplinkLocalePathDisclosure.txt

Affected products (53)

cpe:2.3:o:tp-link:tl-wvr300_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:tl-wvr302_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:tl-wvr450_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:tl-wvr450l_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:tl-wvr450g_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:tl-wvr458_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:tl-wvr458l_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:tl-wvr458p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:tl-wvr900g_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:tl-wvr900l_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:tl-wvr1200l_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:tl-wvr1300l_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:tl-wvr1300g_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:tl-wvr1750l_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:tl-war2600l_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:tl-wvr4300l_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:tl-war302_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:tl-war450_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:tl-war450l_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:tl-war458_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:tl-war458l_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:tl-war900l_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:tl-war1200l_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:tl-war1300l_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:tl-war1750l_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:tl-er3210g_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:tl-er3220g_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:tl-er5110g_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:tl-er5120g_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:tl-er5510g_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:tl-er5520g_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:tl-er6110g_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:tl-er6120g_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:tl-er6220g_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:tl-er6510g_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:tl-er6520g_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:tl-er7520g_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:tl-r473_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:tl-r473g_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:tl-r473p-ac_firmware:-:*:*:*:*:*:*:*

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