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CVE-2020-9278

30
FAUCET Score

CVE-2020-9278 describes a critical vulnerability in D-Link DSL-2640B B2 EU_4.01B devices, allowing an unauthenticated attacker to reset the device to its default configuration by accessing a specific URL. This flaw carries a CVSS score of 9.1 (CRITICAL) due to its network-based attack vector, low complexity, and high impact on integrity and availability. While there is no evidence of active exploitation or readily available public exploit code, the vulnerability has garnered significant community discussion, indicating awareness among security researchers.

Impacted Technologies

VendorProductVersion(s)CPE
eu_4.01bCPE matchmatch criteria
cpe:2.3:o:dlink:dsl-2640b_firmware:eu_4.01b:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.1CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.62%
Probability of exploitation in next 30 days
EPSS Percentile
73.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0162 is in the 61st percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

raelize.com / advisories/CVE-2020-9278_D-Link-DSL-2640B_Unauthenticated-configuration-reset_v1.0.txt
Third Party Advisory
raelize.com / posts/d-link-dsl-2640b-security-advisories
ExploitThird Party Advisory
dlink.com / en/security-bulletin
Vendor Advisory