CVE-2026-49200: The acer_cgi.log file in the device firmware is accessible without authentication via the web interface

Q: How do I fix CVE-2026-49200?

wave 7 firmware: upgrade to newer than t7c_gbl_1.01.000055. Exact commands for each OS are on this page.

Q: Is CVE-2026-49200 being exploited?

CVE-2026-49200 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-49200 affect?

CVE-2026-49200 affects wave 7 firmware. Severity is critical (CVSS 9.8). The acer_cgi.log file in the device firmware is accessible without authentication via the web interface. This file contains cleartext login credentials (for web and Telnet), leading to unauthorized system access.

Q: How urgent is CVE-2026-49200?

Priority 50/100. Critical severity; Remotely exploitable, no login, no user action

This month

CRITICAL 9.8REMOTEUPGRADE

CVE-2026-49200 is a critical-severity flaw (CVSS 9.8) affecting wave 7 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The acer_cgi.log file in the device firmware is accessible without authentication via the web interface. This file contains cleartext login credentials (for web and Telnet), leading to unauthorized system access.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.5% (top 56%)
CISA exploited list	No
Weakness	CWE-532
Published	2026-05-29
Last modified	2026-07-21

Publisher (CNA): Acer · Vendor: acer

Last updated 2026-07-21 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-29 09:16 UTCPublished CVE record published
2026-07-21 12:10 UTCUpdated Record last modified

acer wave 7 firmware UPGRADE

Affected: <= t7c_gbl_1.01.000055

Fixed in: newer than t7c_gbl_1.01.000055

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-49200?

wave 7 firmware: upgrade to newer than t7c_gbl_1.01.000055. Exact commands for each OS are on this page.

Is CVE-2026-49200 being exploited?

CVE-2026-49200 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-49200 affect?

CVE-2026-49200 affects wave 7 firmware. Severity is critical (CVSS 9.8). The acer_cgi.log file in the device firmware is accessible without authentication via the web interface. This file contains cleartext login credentials (for web and Telnet), leading to unauthorized system access.

How urgent is CVE-2026-49200?

Priority 50/100. Critical severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2026-49201 CRITICAL 9.8 UPGRADE The upload.cgi binary, responsible for processing device backups, contains a hardcoded AES encryption key

References

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