What is the CVSS score of CVE-2021-40858?

CVE-2021-40858 has a CVSS 3.1 base score of 4.9 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N. EPSS exploitation probability: 2.4%.

Is there a public PoC exploit available for CVE-2021-40858?

Yes, a public proof-of-concept exploit is available for CVE-2021-40858. Prioritise patching immediately. EPSS: 2.4%.

Compact 5500R Ip Firmware CVE-2021-40858

MEDIUM

Path Traversal (CWE-22)

2021-12-13 cve@mitre.org

Path Traversal Compact 5500R Ip Firmware Compact 5200R Ip Firmware Compact 5000R Ip Firmware Compact 4000 Ip Firmware Commander 6000R Ip Firmware Commander 6000Rx Ip Firmware Commander Business 19 Ip Firmware Commander Basic 2 19 Ip Firmware Compact 5010 Voip Ip Firmware Compact 5020 Voip Ip Firmware

4.9

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

4.9 MEDIUM

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Lifecycle Timeline

CVE Published

Dec 13, 2021 - 04:15 nvd

MEDIUM 4.9

DescriptionNVD

Auerswald COMpact 5500R devices before 8.2B allow Arbitrary File Disclosure. A sub-admin can read the cleartext Admin password via the fileName=../../etc/passwd substring.

AnalysisAI

Auerswald COMpact 5500R devices before 8.2B allow Arbitrary File Disclosure. Rated medium severity (CVSS 4.9), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as Path Traversal (CWE-22), which allows attackers to access files and directories outside the intended path. Auerswald COMpact 5500R devices before 8.2B allow Arbitrary File Disclosure. A sub-admin can read the cleartext Admin password via the fileName=../../etc/passwd substring. Affected products include: Auerswald Compact 5500R Ip Firmware, Auerswald Compact 5200R Ip Firmware, Auerswald Compact 5000R Ip Firmware, Auerswald Compact 4000 Ip Firmware, Auerswald Commander 6000R Ip Firmware. Version information: before 8.2.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Validate and canonicalize file paths. Use chroot or sandboxing. Reject input containing path separators or '../' sequences.