CVE-2021-27114: dlink dir-816_firmware Out-of-bounds Write
CVSS: 9.8v3.1CriticalModified
Published 14-04-2021Last modified 03-08-2024
Vulnerability summary
CVE-2021-27114 is a critical (CVSS 9.8) Out-of-bounds Write vulnerability in dlink dir-816_firmware. EPSS estimates a 24.55% chance of exploitation in the next 30 days, higher than 97.8% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
9.8/10
010
Critical · v3.1 (NVD)EPSS score
24.55%
0%100%
High · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github
Timeline
- 14-04-2021PublishedVulnerability first disclosed.
- 03-08-2024Last modifiedVulnerability information updated.
Description
An issue was discovered in D-Link DIR-816 A2 1.10 B05 devices. Within the handler function of the /goform/addassignment route, a very long text entry for the"'s_ip" and "s_mac" fields could lead to a Stack-Based Buffer Overflow and overwrite the return address.
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
24.55%
Chance of exploitation in the next 30 days
Percentile
98%
Versus all other CVEs
30-day change
0.00 pp
From 24.55% on 19-09-2026
19-09-202619-10-2026
EPSS score24.55%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundVuln
Maturity: poc
Weaknesses
CWE · root causeAffected systems
Dlink1 product
- dir-816_firmware1.10b05
1 vendor · 1 product