CVE-2019-7193
CVE-2019-7193 is a security flaw in QNAP QTS, a network drive for storing files and backups at home or in a small office. Attackers can run their own code on QNAP QTS. The US Cybersecurity and Infrastructure Security Agency (CISA) added it to its catalog of flaws known to be used in attacks on 8 Jun 2022, and says ransomware gangs have used it.[1]
QNAP QTS is in things households have: network drives for files and backups, so the fix matters at home as much as at work. QNAP has published a fix or advice.
Description
CISA calls it an improper input validation in QNAP QTS. In its words: “QNAP QTS contains an improper input validation vulnerability allowing remote attackers to inject code on the system.”[1]
The CVE record adds: “This improper input validation vulnerability allows remote attackers to inject arbitrary code to the system. To fix the vulnerability, QNAP recommend updating QTS to their latest versions.”[2]
The underlying weakness is improper input validation (CWE-20), in MITRE’s list of common software weaknesses.
It scores 9.8 out of 10 on the Common Vulnerability Scoring System, which rates it critical, scored by NVD using CVSS 3.1.[2]
Affected versions
NVD’s record doesn’t list version ranges for it; QNAP’s advisory has them[3]. CISA names the product as QNAP QTS.
Every device with QNAP QTS needs the update.
Exploitation
CISA added it to its catalog of known exploited vulnerabilities on 8 Jun 2022, 916 days after it was made public. CISA lists a flaw only when it has reliable evidence of it being exploited, and gave US federal agencies until 22 Jun 2022 to fix it.[1] CISA says ransomware gangs have used it.
FIRST’s Exploit Prediction Scoring System, which estimates how likely a flaw is to be used in attacks in the next 30 days from what it sees across the internet, puts it at 14%. That’s in the top 4% of the flaws it scores.[4]
CISA assesses it as automatable: attackers can run it against many targets at once.
CISA doesn’t say who was attacked, or how.
Fix
QNAP has published a fix or advice.[3] CISA’s required action: “Apply updates per vendor instructions.”[1]
- Update QNAP QTS now.Install the latest update from QNAP on every device that has it, and restart when asked. Then turn on automatic updates, so the next fix arrives on its own.
- If the maker has stopped updating it, replace it.Network drives stop getting fixes after a few years, and attackers keep a list of the ones that did. If there’s no newer firmware, it won’t be fixed.
Timeline
| Date | Event |
|---|---|
| The flaw is made public in the National Vulnerability Database, with a severity score of 9.8.[2] | |
| CISA adds it to its catalog of flaws known to be used in attacks, noting that ransomware gangs have used it.[1] | |
| CISA’s deadline for US government agencies to fix it.[1] | |
| FIRST puts the odds of it being used in attacks in the next 30 days at 14%.[4] |
See also
Other QNAP flaws
- CVE-2023-47565, QNAP VioStor NVR: OS command injection ·
- CVE-2022-27593, QNAP Photo Station: externally controlled reference ·
- CVE-2019-7195, QNAP Photo Station: path traversal ·
- CVE-2019-7194, QNAP Photo Station: path traversal ·
- CVE-2019-7192, QNAP Photo Station: improper access control ·
Other improper input validation flaws
- CVE-2026-93952, Arista VeloCloud Orchestrator: improper input validation ·
- CVE-2019-1068, Microsoft SQL Server: remote code execution ·
- CVE-2026-12569, PTC Windchill and FlexPLM: improper input validation ·
- CVE-2026-34910, Ubiquiti UniFi OS: improper input validation ·
- CVE-2026-6973, Ivanti Endpoint Manager Mobile (EPMM): improper input validation ·
Added the same day
- CVE-2019-7195, QNAP Photo Station: path traversal ·
- CVE-2019-7194, QNAP Photo Station: path traversal ·
- CVE-2019-7192, QNAP Photo Station: improper access control ·
- CVE-2019-5825, Chrome and other Chromium browsers: out-of-bounds write ·
- CVE-2019-15271, Cisco RV Series Routers: deserialization of untrusted data ·
Every QNAP flaw on CISA’s list · Everything added in June 2022
References
- ^ Cybersecurity and Infrastructure Security Agency. “QNAP QTS Improper Input Validation Vulnerability”. Known Exploited Vulnerabilities Catalog, added 8 Jun 2022.
- ^ National Institute of Standards and Technology. “CVE-2019-7193 Detail”. National Vulnerability Database, published 5 Dec 2019.
- ^ QNAP. Advisories and fixes: qnap.com.
- ^ FIRST. “Exploit Prediction Scoring System”. EPSS 0.144, percentile 96.6, 31 Oct 2026.
- CVE Program. “CVE-2019-7193”. The official CVE record.
This article is built from CISA’s catalog (version 2026.10.30), NVD’s record and FIRST’s scores, kept in HARD’s database and checked every morning. The plain English is HARD’s.