PatchTheCVECVE-2020-29655: An injection vulnerability exists in RT-AC88U Download Master before 3.1.0.108
CVE-2020-29655 is a high-severity flaw (CVSS 7.5) affecting rt-ac88u firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
An injection vulnerability exists in RT-AC88U Download Master before 3.1.0.108. Accessing Main_Login.asp?flag=1&productname=FOOBAR&url=/downloadmaster/task.asp will redirect to the login site, which will show the value of the parameter productname within the title. An attacker might be able to influence the appearance of the login page, aka text injection.
Why this priority
- High severity
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 7.5 (High) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 0.9% (top 40%) |
| CISA exploited list | No |
| Weakness | CWE-74 |
| Published | 2020-12-09 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
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-2020-29655?
rt-ac88u firmware: upgrade to 3.1.0.108. Exact commands for each OS are on this page.
Is CVE-2020-29655 being exploited?
CVE-2020-29655 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-2020-29655 affect?
CVE-2020-29655 affects rt-ac88u firmware. Severity is high (CVSS 7.5). An injection vulnerability exists in RT-AC88U Download Master before 3.1.0.108. Accessing Main_Login.asp?flag=1&productname=FOOBAR&url=/downloadmaster/task.asp will redirect to the login site, which will show the value of the parameter prod
How urgent is CVE-2020-29655?
Priority 46/100. High severity; Remotely exploitable, no login, no user action
Related CVEs
- CVE-2020-29656 HIGH 7.5 UPGRADE An information disclosure vulnerability exists in RT-AC88U Download Master before 3.1.0.108
- CVE-2018-9285 CRITICAL 9.8 UPGRADE UPGRADE Main_Analysis_Content.asp in /apply.cgi on ASUS RT-AC66U, RT-AC68U, RT-AC86U, RT-AC88U, RT-AC1900, RT-AC2900,
- CVE-2018-18320 CRITICAL 9.8 UPGRADE UPGRADE An issue was discovered in the Merlin.PHP component 0.6.6 for Asuswrt-Merlin devices
- CVE-2018-18319 CRITICAL 9.8 UPGRADE UPGRADE An issue was discovered in the Merlin.PHP component 0.6.6 for Asuswrt-Merlin devices
- CVE-2017-11420 CRITICAL 9.8 UPGRADE UPGRADE Stack-based buffer overflow in ASUS_Discovery.c in networkmap in Asuswrt-Merlin firmware for ASUS devices and