Buffer overflow in TP-Link Ac1750
CVE-2021-27246
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of TP-Link Archer A7 AC1750 1.0.15 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of MAC addresses by the tdpServer endpoint. A crafted TCP message can write stack pointers to the stack. An attacker can leverage this vulnerability to execute code in the context of the root user. Was ZDI-CAN-12306.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.0 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.066 (93.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 94th percentile — 93.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.066 · newest: 0.066 · change: 0.000
Affected products
- TP-Link Ac1750 — versions 1.0.15 Build 20200628 rel.63501(4341), a7
- TP-Link Ac1750 Firmware — versions 1.0.15
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.zerodayinitiative.com/advisories/ZDI-21-215/ (VDB Entry, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-27246?
- CVE-2021-27246 is a high-severity vulnerability in TP-Link Ac1750, classified under Stack-based Buffer Overflow. CVSS score: 8.0/10. Published 2021-04-14.
- How severe is CVE-2021-27246?
- High severity. CVSS v3 base score is 8.0 out of 10.
- Is CVE-2021-27246 known to be exploited?
- 25 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.