What is the CVSS score of CVE-2020-26561?

CVE-2020-26561 has a CVSS 3.1 base score of 8.8 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 12.2%.

Is there a public PoC exploit available for CVE-2020-26561?

Yes, a public proof-of-concept exploit is available for CVE-2020-26561. Prioritise patching immediately. EPSS: 12.2%.

Linksys Wrt 160Nl Firmware CVE-2020-26561

HIGH

Out-of-bounds Write (CWE-787)

2020-10-23 cve@mitre.org

Buffer Overflow RCE Memory Corruption Linksys Linksys Wrt 160Nl Firmware

8.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

8.8 HIGH

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

CVE Published

Oct 23, 2020 - 06:15 nvd

HIGH 8.8

DescriptionNVD

Belkin LINKSYS WRT160NL 1.0.04.002_US_20130619 devices have a stack-based buffer overflow vulnerability because of sprintf in create_dir in mini_httpd. Successful exploitation leads to arbitrary code execution. NOTE: This vulnerability only affects products that are no longer supported by the maintainer

AnalysisAI

Belkin LINKSYS WRT160NL 1.0.04.002_US_20130619 devices have a stack-based buffer overflow vulnerability because of sprintf in create_dir in mini_httpd. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as Out-of-bounds Write (CWE-787), which allows attackers to write data beyond allocated buffer boundaries leading to code execution or crashes. Belkin LINKSYS WRT160NL 1.0.04.002_US_20130619 devices have a stack-based buffer overflow vulnerability because of sprintf in create_dir in mini_httpd. Successful exploitation leads to arbitrary code execution. NOTE: This vulnerability only affects products that are no longer supported by the maintainer Affected products include: Belkin Linksys Wrt 160Nl Firmware.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Validate write boundaries, use memory-safe languages, enable compiler protections (ASLR, stack canaries).