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CVE-2025-8231

24
FAUCET Score

CVE-2025-8231 is a critical hard-coded credentials vulnerability affecting D-Link DIR-890L routers up to firmware version 111b04, specifically within the rgbin file processing of the UART Port component. With a CVSS score of 6.8 (Medium), this vulnerability requires physical access to the device (AV:P) but allows for complete compromise (C:H, I:H, A:H) without user interaction. Although the exploit has been publicly disclosed, there is no evidence of active exploitation, and it has garnered minimal community discussion or media coverage, likely due to affecting only unsupported products.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.11b04CPE matchmatch criteria
cpe:2.3:o:dlink:dir-890l_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 4.0

5.2MEDIUM

CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector
PHYSICAL
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
VS Confidentiality
HIGH
VS Integrity
HIGH
VS Availability
HIGH
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
PROOF_OF_CONCEPT
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.66%
Probability of exploitation in next 30 days
EPSS Percentile
47.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0066 is in the 86th percentile among its peer group of 1,531 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.2 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

github.com / Nicholas-wei/bug-discovery/blob/main/dlink/dir890-hardcoded/dir890-hardcoded.md
Exploit
vuldb.com
Permissions RequiredVDB Entry
vuldb.com
Third Party AdvisoryVDB Entry
vuldb.com
Third Party AdvisoryVDB Entry
dlink.com
Product