Buffer overflow in Dlink Dir-825
CVE-2020-29557
An issue was discovered on D-Link DIR-825 R1 devices through 3.0.1 before 2020-11-20. A buffer overflow in the web interface allows attackers to achieve pre-authentication remote code execution.
Vulnerability class: Buffer Overflow
EPSS: 0.543 (98.9th percentile) — read the EPSS interpretation.
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.
Affected products
- Dlink Dir-825 — versions r1
- Dlink Dir-825\/a — versions d1a
- Dlink Dir-825\/ac — versions e, e1a
- Dlink Dir-825\/acf — versions f1
- Dlink Dir-825\/gf — versions gf
- Dlink Dir-825_r1_firmware
- N/a — versions n/a
Weakness classification (CWE)
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
Required action: Apply updates per vendor instructions.
Public proof-of-concept exploits
References
- cve@mitre.org (Product, x_refsource_MISC)
- cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC, Broken Link)
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)
Frequently asked questions
- What is CVE-2020-29557?
- CVE-2020-29557 is a critical-severity vulnerability in Dlink Dir-825, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2021-01-29.
- How severe is CVE-2020-29557?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2020-29557 known to be exploited?
- Yes. CVE-2020-29557 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03), indicating it is being actively exploited. 2 public proof-of-concept repositories are indexed.