CVE-2021-20857
MEDIUMCVSS 5.4/10EPSS 0.58%
Last modified
CVE-2021-20857 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. Cross-site scripting vulnerability in ELECOM LAN router WRC-2533GHBK-I firmware v1.20 and prior allows a remote authenticated attacker to inject an arbitrary script via unspecified vectors.. EPSS estimates a 0.58% chance of exploitation in the next 30 days.
Description
Cross-site scripting vulnerability in ELECOM LAN router WRC-2533GHBK-I firmware v1.20 and prior allows a remote authenticated attacker to inject an arbitrary script via unspecified vectors.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Elecom | Wrc-2533ghbk-I Firmware | <= 1.20 |
References
- https://jvn.jp/en/jp/JVN88993473/index.htmlThird Party Advisory
- https://www.elecom.co.jp/news/security/20211130-01/Vendor Advisory
- https://jvn.jp/en/jp/JVN88993473/index.htmlThird Party Advisory
- https://www.elecom.co.jp/news/security/20211130-01/Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-20857?
Cross-site scripting vulnerability in ELECOM LAN router WRC-2533GHBK-I firmware v1.20 and prior allows a remote authenticated attacker to inject an arbitrary script via unspecified vectors.
How severe is CVE-2021-20857?
CVE-2021-20857 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.58% probability of exploitation in the next 30 days.
How do I fix CVE-2021-20857?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2021-20857?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST