CVE-2019-6258: d-link dir-822_firmware Classic Buffer Overflow
CVSS: 9.8v3.1CriticalModified
Published 18-08-2020Last modified 04-08-2024
Vulnerability summary
CVE-2019-6258 is a critical (CVSS 9.8) Classic Buffer Overflow vulnerability in d-link dir-822_firmware. EPSS estimates a 2.62% chance of exploitation in the next 30 days, higher than 85.2% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
9.8/10
010
Critical · v3.1 (NVD)EPSS score
2.62%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github
Timeline
- 18-08-2020PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
D-Link DIR-822 Rev.Bx devices with firmware v.202KRb06 and older allow a buffer overflow via long MacAddress data in a /HNAP1/SetClientInfo HNAP protocol message, which is mishandled in /usr/sbin/udhcpd during reading of the /var/servd/LAN-1-udhcpd.conf file.
CVSS metrics
2 scores · 1 source · 2 versionsCritical 9.8Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HSourcesSingle source
High 7.5Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:P/I:P/A:PSourcesSingle source
EPSS trend
Probability
2.62%
Chance of exploitation in the next 30 days
Percentile
85%
Versus all other CVEs
30-day change
0.00 pp
From 2.62% on 19-09-2026
19-09-202619-10-2026
EPSS score2.62%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundCve
Maturity: poc
Weaknesses
CWE · root causeAffected systems
D-link1 product
- dir-822_firmware≤ 2.02krb06
1 vendor · 1 product
References
2 links- supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10175X Refsource CONFIRMPatchVendor Advisory