Buffer overflow in TP-Link Wn886n
CVE-2021-44864
TP-Link WR886N 3.0 1.0.1 Build 150127 Rel.34123n is vulnerable to Buffer Overflow. Authenticated attackers can crash router httpd services via /userRpm/PingIframeRpm.htm request which contains redundant & in parameter.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.102 (95.5th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 96th percentile — 95.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.102 · newest: 0.102 · change: 0.000
Affected products
- TP-Link Wn886n — versions 3.0
- TP-Link Wn886n Firmware — versions 1.0.1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/zhlu32/cve/blob/main/tplink/wr886n/Tplink-wr886n-V3-Ping-DOS.md (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-44864?
- CVE-2021-44864 is a medium-severity vulnerability in TP-Link Wn886n, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 6.5/10. Published 2022-02-08.
- How severe is CVE-2021-44864?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2021-44864 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.