CVE-2021-45757
CVE-2021-45757 is a high-severity vulnerability in Asus Rt-ac68u Firmware with a CVSS 3.x base score of 7.5. 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-120.
Key facts
- Severity: High (CVSS 3.x base score 7.5)
- CVSS v2: 7.8
- EPSS exploit prediction: 2% (76th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-120
- Affected product: Asus Rt-ac68u Firmware
- Published:
- Last modified:
Description
ASUS AC68U <=3.0.0.4.385.20852 is affected by a buffer overflow in blocking.cgi, which may cause a denial of service (DoS).
Frequently asked questions
- What is CVE-2021-45757?
- ASUS AC68U <=3.0.0.4.385.20852 is affected by a buffer overflow in blocking.cgi, which may cause a denial of service (DoS).
- How severe is CVE-2021-45757?
- CVE-2021-45757 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2021-45757 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-45757?
- CVE-2021-45757 affects Asus Rt-ac68u Firmware. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-45757?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2021-45757 published?
- CVE-2021-45757 was published on 2022-03-23 and last updated on 2026-07-05.
References
Affected products (1)
- cpe:2.3:o:asus:rt-ac68u_firmware:*:*:*:*:*:*:*:*
More vulnerabilities in Asus Rt-ac68u Firmware
- CVE-2021-45756 — Critical (CVSS 9.8): Asus RT-AC68U <3.0.0.4.385.20633 and RT-AC5300 <3.0.0.4.384.82072 are affected by a buffer overflow in…
- CVE-2018-9285 — Critical (CVSS 9.8): Main_Analysis_Content.asp in /apply.cgi on ASUS RT-AC66U, RT-AC68U, RT-AC86U, RT-AC88U, RT-AC1900, RT-AC2900, and…
- CVE-2021-37317 — Critical (CVSS 9.1): Directory Traversal vulnerability in Cloud Disk in ASUS RT-AC68U router firmware version before 3.0.0.4.386.41634…
- CVE-2021-37315 — Critical (CVSS 9.1): Incorrect Access Control issue discoverd in Cloud Disk in ASUS RT-AC68U router firmware version before…
- CVE-2021-43702 — Critical (CVSS 9.0): ASUS RT-A88U 3.0.0.4.386_45898 is vulnerable to Cross Site Scripting (XSS). The ASUS router admin panel does not…
- CVE-2013-5948 — High (CVSS 8.5): The Network Analysis tab (Main_Analysis_Content.asp) in the ASUS RT-AC68U and other RT series routers with firmware…
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