CVE-2018-20305
CVE-2018-20305 is a critical-severity vulnerability in D-link Dir-816 A2 Firmware with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-787.
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- CVSS v2: 7.5
- EPSS exploit prediction: 4% (89th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-787
- Affected product: D-link Dir-816 A2 Firmware
- Published:
- Last modified:
Description
D-Link DIR-816 A2 1.10 B05 devices allow arbitrary remote code execution without authentication via the newpass parameter. In the /goform/form2userconfig.cgi handler function, a long password may lead to a stack-based buffer overflow and overwrite a return address.
Frequently asked questions
- What is CVE-2018-20305?
- D-Link DIR-816 A2 1.10 B05 devices allow arbitrary remote code execution without authentication via the newpass parameter. In the /goform/form2userconfig.cgi handler function, a long password may lead to a stack-based buffer overflow and overwrite a return address.
- How severe is CVE-2018-20305?
- CVE-2018-20305 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2018-20305 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2018-20305?
- CVE-2018-20305 affects D-link Dir-816 A2 Firmware. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2018-20305?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2018-20305 published?
- CVE-2018-20305 was published on 2018-12-20 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:o:d-link:dir-816_a2_firmware:1.10b05:*:*:*:*:*:*:*
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