CVE-2021-45757: asus rt-ac68u_firmware Classic Buffer Overflow
CVSS: 7.8v2.0HighModified
Published 23-03-2022Last modified 09-07-2026
Vulnerability summary
CVE-2021-45757 is a high (CVSS 7.8) Classic Buffer Overflow vulnerability in asus rt-ac68u_firmware. EPSS estimates a 1.08% chance of exploitation in the next 30 days, higher than 64.6% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
7.8/10
010
High · v2.0 (NVD)EPSS score
1.08%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github
Timeline
- 23-03-2022PublishedVulnerability first disclosed.
- 09-07-2026Last modifiedVulnerability information updated.
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).
CVSS metrics
2 scores · 1 source · 2 versionsHigh 7.5Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HSourcesSingle source
High 7.8Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:N/I:N/A:CSourcesSingle source
EPSS trend
Probability
1.08%
Chance of exploitation in the next 30 days
Percentile
65%
Versus all other CVEs
30-day change
0.00 pp
From 1.08% on 19-09-2026
19-09-202619-10-2026
EPSS score1.08%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundAsus
Maturity: poc
Weaknesses
CWE · root causeAffected systems
Asus1 product
- rt-ac68u_firmware≤ 3.0.0.4.385.20852
1 vendor · 1 product