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CVE-2018-15839

67
FAUCET Score

CVE-2018-15839 is a critical buffer overflow vulnerability affecting D-Link DIR-615 routers, stemming from improper handling of a long Authorization HTTP header. With a CVSS score of 9.8, this vulnerability allows for unauthenticated remote code execution, leading to complete compromise of the device. While not currently on CISA's KEV catalog, a Denial of Service proof-of-concept exists on ExploitDB, and its high EPSS score suggests a significant likelihood of future exploitation. Despite its severity, there is minimal public discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:dlink:dir-615_firmware:-:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
45.35%
Probability of exploitation in next 30 days
EPSS Percentile
98.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
ExploitDB: EDB-45317 · Sep 3, 2018
This CVE's current EPSS score of 0.4535 is in the 96th percentile among its peer group of 36,829 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

hackingvila.wordpress.com / 2018/08/24/d-link-dir-615-buffer-overflow-via-a-long-authorization-http-header-click-here
Permissions RequiredThird Party Advisory
exploit-db.com / exploits/45317
Third Party AdvisoryVDB Entry