CVE-2019-6537
No exploitation reported by the sources we read.
- Published2019-02-13
- WeaknessCWE-121 · CWE-787
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « affected ».With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.
Description
Multiple stack-based buffer overflow vulnerabilities in WECON LeviStudioU version 1.8.56 and prior may be exploited when parsing strings within project files. The process does not properly validate the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage these vulnerabilities to execute code under the context of the current process. Mat Powell, Ziad Badawi, and Natnael Samson working with Trend Micro's Zero Day Initiative, reported these vulnerabilities to NCCIC.
Timeline
dates in UTC- 2019-02-1300:29CVE publishedNVD
Observed activity
isMalicious corpus · updated 2026-10-23 18:48 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2019-6537?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2019-6537?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
NVD| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 1.8 | ≤ 1.8.56 | no fix published | NVD |
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Distribution builds and vendor advisories
Packages from OSV.dev and products from the vendors' CSAF advisories.
version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.
Vendor advisories
WECON LeviStudioU (Update A)
LeviStudioU: Versions 1.8.69 and prior
Fix
- Mitigation from the vendor CISA ICSA-19-036-03 · 1 productWECON has produced Version 1.8.69 to fix the reported vulnerabilities in Version 1.8.56; however, exploits are still successful against this updated version. Future software updates will be made available
- Mitigation from the vendor CISA ICSA-19-036-03 · 1 productFor more information contact WECON customer service: Phone: 0086-591-87868869-894 Website: http://www.we-con.com.cn/en/message.html
Advisories and patches
- ics-cert.us-cert.govPatch
Detection
- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- none listed PoC-in-GitHub
Sources
- NVDCVSS 3.17.8read 2026-10-23
- NVDCVSS 2.06.8read 2026-10-23
- CNAweakness (CWE)CWE-121read 2026-10-23
- NVDweakness (CWE)CWE-787read 2026-10-23
- FIRST EPSSEPSS score1.9 %2026-10-22
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Published
- 2019-02-13
- Last Modified
- 2026-06-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2019-6537?
Is CVE-2019-6537 actively exploited?
What is the CVSS score for CVE-2019-6537?
Running WECON LeviStudioU? Hear about its next vulnerability
Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».
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- Following what attackers exploit right now? The CISA KEV additions of the month, with their patch deadlines.
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Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.