CVE-2018-8878
CVE-2018-8878 is a medium-severity vulnerability in Asuswrt-merlin with a CVSS 3.x base score of 5.3. 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-200.
Key facts
- Severity: Medium (CVSS 3.x base score 5.3)
- CVSS v2: 5.0
- EPSS exploit prediction: 1% (70th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-200
- Affected product: Asuswrt-merlin
- Published:
- Last modified:
Description
Information disclosure in Asuswrt-Merlin firmware for ASUS devices older than 384.4 and ASUS firmware before 3.0.0.4.382.50470 for devices allows remote attackers to acquire information on internal network devices' hostnames and MAC addresses by reading the custom_id variable on the blocking.asp page.
Frequently asked questions
- What is CVE-2018-8878?
- Information disclosure in Asuswrt-Merlin firmware for ASUS devices older than 384.4 and ASUS firmware before 3.0.0.4.382.50470 for devices allows remote attackers to acquire information on internal network devices' hostnames and MAC addresses by reading the custom_id variable on the blocking.asp page.
- How severe is CVE-2018-8878?
- CVE-2018-8878 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
- Is CVE-2018-8878 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2018-8878?
- CVE-2018-8878 primarily affects Asuswrt-merlin. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2018-8878?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2018-8878 published?
- CVE-2018-8878 was published on 2020-02-27 and last updated on 2026-06-17.
References
Affected products (2)
- cpe:2.3:o:asuswrt-merlin:asuswrt-merlin:*:*:*:*:*:*:*:*
- cpe:2.3:o:asus:asus_firmware:*:*:*:*:*:*:*:*
More vulnerabilities in Asuswrt-merlin
- CVE-2018-5721 — High (CVSS 8.8): Stack-based buffer overflow in the ej_update_variables function in router/httpd/web.c on ASUS routers (when using…
- CVE-2017-12754 — High (CVSS 8.8): Stack buffer overflow in httpd in Asuswrt-Merlin firmware 380.67_0RT-AC5300 and earlier for ASUS devices and ASUS…
- CVE-2018-8877 — Medium (CVSS 5.3): Information disclosure in Asuswrt-Merlin firmware for ASUS devices older than 384.4 and ASUS firmware before…
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