CVE-2020-15858: Some devices of Thales DIS (formerly Gemalto, formerly Cinterion) allow Directory Traversal by physically proximate attackers. The directory path acce...

Description

Some devices of Thales DIS (formerly Gemalto, formerly Cinterion) allow Directory Traversal by physically proximate attackers. The directory path access check of the internal flash file system can be circumvented. This flash file system can store application-specific data and data needed for customer Java applications, TLS and OTAP (Java over-the-air-provisioning) functionality. The affected products and releases are: BGS5 up to and including SW RN 02.000 / ARN 01.001.06 EHSx and PDSx up to and including SW RN 04.003 / ARN 01.000.04 ELS61 up to and including SW RN 02.002 / ARN 01.000.04 ELS81 up to and including SW RN 05.002 / ARN 01.000.04 PLS62 up to and including SW RN 02.000 / ARN 01.000.04

Metrics

CVSS 3.1

6.4/10

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

EPSS Probability

0.79%

51.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-22

Affected Software

Vendor	Product	Versions
Thalesgroup	Bgs5 Firmware	<= rn_02.000_\/_arn_01.001.06
Thalesgroup	Ehs5 Firmware	<= rn_04.003_\/_arn_01.000.04
Thalesgroup	Ehs8 Firmware	<= rn_04.003_\/_arn_01.000.04
Thalesgroup	Ehs6 Firmware	<= rn_04.003_\/_arn_01.000.04
Thalesgroup	Pds5 Firmware	<= rn_04.003_\/_arn_01.000.04
Thalesgroup	Pds6 Firmware	<= rn_04.003_\/_arn_01.000.04
Thalesgroup	Els61 Firmware	<= rn_02.002_\/_arn_01.000.04
Thalesgroup	Els81 Firmware	<= rn_05.002_\/_arn_01.000.04
Thalesgroup	Pls62 Firmware	<= rn_02.000_\/_arn_01.000.04

References

Timeline

Published: Aug 21, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-15858?

Some devices of Thales DIS (formerly Gemalto, formerly Cinterion) allow Directory Traversal by physically proximate attackers. The directory path access check of the internal flash file system can be circumvented. This flash file system can store application-specific data and data needed for customer Java applications, TLS and OTAP (Java over-the-air-provisioning) functionality. The affected products and releases are: BGS5 up to and including SW RN 02.000 / ARN 01.001.06 EHSx and PDSx up to and including SW RN 04.003 / ARN 01.000.04 ELS61 up to and including SW RN 02.002 / ARN 01.000.04 ELS81 up to and including SW RN 05.002 / ARN 01.000.04 PLS62 up to and including SW RN 02.000 / ARN 01.000.04

How severe is CVE-2020-15858?

CVE-2020-15858 has a CVSS score of 6.4/10 (MEDIUM severity). The EPSS model estimates a 0.79% probability of exploitation in the next 30 days.

How do I fix CVE-2020-15858?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.