CVE-2026-49200 is a critical (CVSS 9.8) flaw in Acer Wave 7 firmware. The acer_cgi.log file can be fetched through the web interface without authentication, and it holds cleartext web and Telnet login credentials. The record names no fixed version, so check Acer's advisory (article 19673).
What's affected
- Product: Acer Wave 7, hardware and firmware.
- Fixed version: not stated in the CVE record. Check Acer's advisory (article 19673).
- Weakness: CWE-532, insertion of sensitive information into a log file.
- CVSS 9.8 (critical), vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. - Published 29 May 2026. Not marked as exploited in CISA KEV.
CVE-2026-49201 is a second issue in the same device and advisory.
How to check if you're exposed
Acer ships these devices as consumer networking hardware, so there is no package manager to query. Use the device itself.
- Log in to the Acer Wave 7 admin page or the Acer Connect app and note the firmware version shown in the device or system information screen.
- Open the Acer advisory named in the Sources section and compare your version with the fixed firmware it lists.
- If the admin page or any service on the device is reachable from the internet, treat that as a separate problem and close it, whatever the firmware version.
What to do now
- Open the Acer advisory (knowledge base article 19673) and confirm which Acer Wave 7 firmware fixes this CVE. The CVE record does not name a fixed version, so do not assume one.
- Install the fixed firmware through the vendor update path as soon as it is available for your unit.
- Until then, keep the admin interface off the internet and limit it to a trusted management network.
- Change any password or key that was stored on or sent through the device if you think it may have been exposed.
- Add the device to your asset inventory with its firmware version so the next advisory is easy to match.
- After updating, change the web and Telnet passwords. If credentials sat in a readable log, assume someone could have read them.
Why it matters
Two mistakes stack here. Credentials were written to a log in cleartext, and the log was served without a login. Either one alone is bad. Together they hand out the keys to anyone who can reach the web interface.
Logs should never contain secrets, and files in a web root should be reviewed as carefully as code. If you maintain services of your own, grep your logs for passwords and tokens now. The record classifies this as CWE-532.
Quick check
Should I disable Telnet?
If the device lets you, yes. Telnet sends everything in cleartext. Prefer SSH where available, and keep management interfaces off the internet.
Sources
- Acer knowledge base article 19673 (named in the CVE record; the page was behind a browser check when I tried to read it, so the details here come from the CVE record)
- Safeguard Gold entry
Last reviewed: 19 October 2026.
