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CVE-2017-16957· NVD / CVE Program· CNA mitre

TP-Link TL-WVR, TL-WAR, TL-ER, and TL-R devices allow remote authenticated users to execute arbitrary commands via shell metacharacters in t

TP-Link TL-WVR, TL-WAR, TL-ER, and TL-R devices allow remote authenticated users to execute arbitrary commands via shell metacharacters in the iface field of an admin/diagnostic command to cgi-bin/luci, related to the zone_get_effect_devices function in /usr/lib/lua/luci/controller/admin/diagnostic.lua in uhttpd.

HighCVSS 8.8 · v3.0—No exploit No fix recorded
Published
Nov 27, 2017
Updated
Jun 16, 2026
EPSS
5.6% · 93th percentile
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Report tools

JSON

Action score

37

Monitor

Low priority for now.

CVSS
35 / 40 · 8.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
2 / 30 · 5.6%

Affected systems

VendorProduct
tp-linktl-wvr300 firmware
tp-linktl-wvr300
tp-linktl-wvr302 firmware
tp-linktl-wvr302
tp-linktl-wvr450 firmware
tp-linktl-wvr450
tp-linktl-wvr450l firmware
tp-linktl-wvr450l
tp-linktl-wvr450g firmware
tp-linktl-wvr450g
tp-linktl-wvr458 firmware
tp-linktl-wvr458

and 96 more

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • tp-link tl-er3210g firmwareall versions
  • tp-link tl-er3220g firmwareall versions
  • tp-link tl-er5110g firmwareall versions
  • tp-link tl-er5120g firmwareall versions
  • tp-link tl-er5510g firmwareall versions
  • tp-link tl-er5520g firmwareall versions
  • tp-link tl-er6110g firmwareall versions
  • tp-link tl-er6120g firmwareall versions
  • tp-link tl-er6220g firmwareall versions
  • tp-link tl-er6510g firmwareall versions
  • tp-link tl-er6520g firmwareall versions
  • tp-link tl-er7520g firmwareall versions
  • tp-link tl-r4149g firmwareall versions
  • tp-link tl-r4239g firmwareall versions
  • tp-link tl-r4299g firmwareall versions
  • tp-link tl-r473 firmwareall versions
  • tp-link tl-r473g firmwareall versions
  • tp-link tl-r473p-ac firmwareall versions
  • tp-link tl-r478 firmwareall versions
  • tp-link tl-r478+ firmwareall versions

Same product

tp-link: all records

Other highest-scoring records for the same primary product.

  • CVE-2017-16958TP-Link TL-WVR, TL-WAR, TL-ER, and TL-R devices allow remote authenticated users to execute arbitrary commands via shell metacharacters in t
    36Monitor
  • CVE-2017-16959The 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 exis
    27Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-78 · Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

nvd-primary

Root cause

User input is inserted as text into a shell command. The shell may interpret special characters in the input as part of the command.

The bug in code

The whole CWE-78 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

ts
const host = req.body.host;exec("ping -c 1 " + host, onResult);

Fixed

ts
const host = req.body.host;if (!/^[a-z0-9.-]{1,253}$/i.test(host)) return res.sendStatus(400);execFile("ping", ["-c", "1", host], onResult);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

We use this product, ask for help

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records