CVE-2018-20056
CVE-2018-20056 is a critical-severity vulnerability in D-link Dir-619l 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: 7% (93rd percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-787
- Affected product: D-link Dir-619l Firmware
- Published:
- Last modified:
Description
An issue was discovered in /bin/boa on D-Link DIR-619L Rev.B 2.06B1 and DIR-605L Rev.B 2.12B1 devices. There is a stack-based buffer overflow allowing remote attackers to execute arbitrary code without authentication via the goform/formLanguageChange currTime parameter.
Frequently asked questions
- What is CVE-2018-20056?
- An issue was discovered in /bin/boa on D-Link DIR-619L Rev.B 2.06B1 and DIR-605L Rev.B 2.12B1 devices. There is a stack-based buffer overflow allowing remote attackers to execute arbitrary code without authentication via the goform/formLanguageChange currTime parameter.
- How severe is CVE-2018-20056?
- CVE-2018-20056 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-2018-20056 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2018-20056?
- CVE-2018-20056 primarily affects D-link Dir-619l Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2018-20056?
- 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-2018-20056 published?
- CVE-2018-20056 was published on 2018-12-11 and last updated on 2026-06-17.
References
Affected products (2)
- cpe:2.3:o:d-link:dir-619l_firmware:2.06b1:*:*:*:*:*:*:*
- cpe:2.3:o:d-link:dir-605l_firmware:2.12b1:*:*:*:*:*:*:*
More vulnerabilities in D-link Dir-619l Firmware
- CVE-2018-20057 — High (CVSS 8.8): An issue was discovered in /bin/boa on D-Link DIR-619L Rev.B 2.06B1 and DIR-605L Rev.B 2.12B1 devices.…
All CVEs affecting D-link Dir-619l Firmware →
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