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CVE-2025-28028

21
FAUCET Score

CVE-2025-28028 describes a buffer overflow vulnerability within the downloadFile.cgi component of several TOTOLINK router models, including the A830R, A950RG, A3000RU, and A3100R. This flaw, triggered via the 'v5' parameter, carries a CVSS score of 7.3 (HIGH), indicating it can be exploited remotely without authentication and with low complexity, potentially leading to limited impact on confidentiality, integrity, and availability. While the vulnerability is significant, there is currently no evidence of active exploitation, public exploit code, or notable community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
4.1.2cu.5182_b20201102CPE matchmatch criteria
cpe:2.3:o:totolink:a830r_firmware:4.1.2cu.5182_b20201102:*:*:*:*:*:*:*
4.1.2cu.5161_b20200903CPE matchmatch criteria
cpe:2.3:o:totolink:a950rg_firmware:4.1.2cu.5161_b20200903:*:*:*:*:*:*:*
5.9c.5185_b20201128CPE matchmatch criteria
cpe:2.3:o:totolink:a3000ru_firmware:5.9c.5185_b20201128:*:*:*:*:*:*:*
4.1.2cu.5247_b20211129CPE matchmatch criteria
cpe:2.3:o:totolink:a3100r_firmware:4.1.2cu.5247_b20211129:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.3HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
3.9
Impact Score
3.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.38%
Probability of exploitation in next 30 days
EPSS Percentile
30.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0038 is in the 10th percentile among its peer group of 51,551 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

locrian-lightning-dc7.notion.site / BufferOverflow4-1948e5e2b1a280b9809af4db6f9e65d1
ExploitThird Party Advisory
locrian-lightning-dc7.notion.site / CVE-2025-28028-BufferOverflow4-1948e5e2b1a280b9809af4db6f9e65d1
ExploitThird Party Advisory