CVE-2021-46442
CriticalExploitedIn the "webupg" binary of D-Link DIR-825 G1, attackers can bypass authentication through parameters "autoupgrade.asp", and perform functions such as downloading configuration files and updating firmware without authorization.
Published Apr 27, 2022 · Updated Nov 21, 2024
Key Facts
Patch immediately- CVE-2021-46442 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting Dir-825 Firmware (Dlink).
- It is exploited in the wild, listed in Industry KEV feed, CIRCL KEV since Apr 27, 2022. No public exploit code is known.
- EPSS estimates a 56% probability of exploitation in the next 30 days.
- No fixed version is listed yet; check the vendor advisory for mitigations.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
56%
Higher than 99.0% of all scored CVEs
Exploited in the wild
Yes
2 catalog listings
Public exploit code
None known
Get the full CVE-2021-46442 brief as a PDF
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Description
In the "webupg" binary of D-Link DIR-825 G1, attackers can bypass authentication through parameters "autoupgrade.asp", and perform functions such as downloading configuration files and updating firmware without authorization.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| Industry KEV feed | Nov 14, 2023 | n/a | Not reported |
| CIRCL KEV | Apr 27, 2022 | n/a | Not reported |
Required action: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.
Affected Products
1 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Dir-825 FirmwareDlink | See advisory | n/a |
Timeline
Publicly disclosed
Apr 27, 2022
Added to CIRCL KEV
Apr 27, 2022
Added to Industry KEV feed
Nov 14, 2023
Last updated
Nov 21, 2024
References
- advisoryhttps://www.dlink.com/en/security-bulletin/
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
FAQ
Common Questions.
In the "webupg" binary of D-Link DIR-825 G1, attackers can bypass authentication through parameters "autoupgrade.asp", and perform functions such as downloading configuration files and updating firmware without authorization.
Affected: Dir-825 Firmware (Dlink). The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed, CIRCL KEV since Apr 27, 2022.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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