Buffer overflow in Dlink Dir-890l
CVE-2022-30521
The LAN-side Web-Configuration Interface has Stack-based Buffer Overflow vulnerability in the D-Link Wi-Fi router firmware DIR-890L DIR890LA1_FW107b09.bin and previous versions. The function created at 0x17958 of /htdocs/cgibin will call sprintf without checking the length of strings in parameters given by HTTP header and can be controlled by users easily. The attackers can exploit the vulnerability to carry out arbitrary code by means of sending a specially constructed payload to port 49152.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.151 (96.6th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 97th percentile — 96.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.144 · newest: 0.151 · change: +0.007
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.dlink.com/en/security-bulletin/ (Vendor Advisory)
- github.com/winmt/CVE/blob/main/DIR-890L/README.md (Exploit, Third Party Advisory)
- github.com/winmt/my-vuls/tree/main/DIR-890L
Frequently asked questions
- What is CVE-2022-30521?
- CVE-2022-30521 is a critical-severity vulnerability in Dlink Dir-890l, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2022-06-02.
- How severe is CVE-2022-30521?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2022-30521 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.