PatchTheCVECVE-2021-20622: Cross-site scripting vulnerability in Aterm WG2600HP firmware Ver1.0.2 and earlier, and Aterm WG2600HP2 firmwa
CVE-2021-20622 is a medium-severity flaw (CVSS 6.1) affecting wg2600hp firmware, wg2600hp2 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Cross-site scripting vulnerability in Aterm WG2600HP firmware Ver1.0.2 and earlier, and Aterm WG2600HP2 firmware Ver1.0.2 and earlier allows remote attackers to inject an arbitrary script via unspecified vectors.
Why this priority
- No elevated risk signals yet
A fixed release or distro patch exists.
Risk facts
| CVSS score | 6.1 (Medium) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | Required |
| EPSS exploit chance | 1.1% (top 36%) |
| CISA exploited list | No |
| Weakness | CWE-79 |
| Published | 2021-01-28 |
| 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-2021-20622?
wg2600hp firmware: upgrade to newer than 1.0.2; wg2600hp2 firmware: upgrade to newer than 1.0.2. Exact commands for each OS are on this page.
Is CVE-2021-20622 being exploited?
CVE-2021-20622 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-2021-20622 affect?
CVE-2021-20622 affects wg2600hp firmware, wg2600hp2 firmware. Severity is medium (CVSS 6.1). Cross-site scripting vulnerability in Aterm WG2600HP firmware Ver1.0.2 and earlier, and Aterm WG2600HP2 firmware Ver1.0.2 and earlier allows remote attackers to inject an arbitrary script via unspecified vectors.
How urgent is CVE-2021-20622?
Priority 37/100. No elevated risk signals yet.
Related CVEs
- CVE-2021-20621 HIGH 8.8 UPGRADE UPGRADE Cross-site request forgery (CSRF) vulnerability in Aterm WG2600HP firmware Ver1.0.2 and earlier, and Aterm WG2
- CVE-2021-20620 MEDIUM 6.1 UPGRADE Cross-site scripting vulnerability in Aterm WF800HP firmware Ver1.0.9 and earlier allows remote attackers to i