How severe is CVE-2021-37189?

CVE-2021-37189 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2021-37189 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-37189?

CVE-2021-37189 primarily affects Digi Transport Wr11 Firmware. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-37189?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-37189 published?

CVE-2021-37189 was published on 2021-12-10 and last updated on 2026-06-17.

CVE-2021-37189

CVE-2021-37189 is a high-severity vulnerability in Digi Transport Wr11 Firmware with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-311.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (44th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-311
Affected product: Digi Transport Wr11 Firmware
Published: 2021-12-10
Last modified: 2026-06-17

Description

An issue was discovered on Digi TransPort Gateway devices through 5.2.13.4. They do not set the Secure attribute for sensitive cookies in HTTPS sessions, which could cause the user agent to send those cookies in cleartext over an HTTP session.

Frequently asked questions

What is CVE-2021-37189?: An issue was discovered on Digi TransPort Gateway devices through 5.2.13.4. They do not set the Secure attribute for sensitive cookies in HTTPS sessions, which could cause the user agent to send those cookies in cleartext over an HTTP session.
How severe is CVE-2021-37189?: CVE-2021-37189 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2021-37189 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-37189?: CVE-2021-37189 primarily affects Digi Transport Wr11 Firmware. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-37189?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-37189 published?: CVE-2021-37189 was published on 2021-12-10 and last updated on 2026-06-17.

References

Affected products (6)

cpe:2.3:o:digi:transport_wr11_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:digi:transport_wr11_xt_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:digi:transport_wr21_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:digi:transport_wr31_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:digi:transport_wr41_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:digi:transport_wr44_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Digi Transport Wr11 Firmware

CVE-2021-35978 — Critical (CVSS 9.8): An issue was discovered in Digi TransPort DR64, SR44 VC74, and WR. The ZING protocol allows arbitrary remote command…
CVE-2021-37188 — High (CVSS 8.8): An issue was discovered on Digi TransPort devices through 2021-07-21. An authenticated attacker may load customized…
CVE-2021-37187 — Medium (CVSS 6.5): An issue was discovered on Digi TransPort devices through 2021-07-21. An authenticated attacker may read a password…

All CVEs affecting Digi Transport Wr11 Firmware →

Other CWE-311 (Missing Encryption of Sensitive Data) vulnerabilities

CVE-2023-6339 — Critical (CVSS 10.0): Google Nest WiFi Pro root code-execution & user-data compromise
CVE-2023-4420 — Critical (CVSS 9.8): A remote unprivileged attacker can intercept the communication via e.g. Man-In-The-Middle, due to the absence of…
CVE-2023-0750 — Critical (CVSS 9.8): Yellobrik PEC-1864 implements authentication checks via javascript in the frontend interface. When the device can be…
CVE-2020-15331 — Critical (CVSS 9.8): Zyxel CloudCNM SecuManager 3.1.0 and 3.1.1 has a hardcoded OAUTH_SECRET_KEY in /opt/axess/etc/default/axess.
CVE-2019-3431 — Critical (CVSS 9.8): All versions up to V4.01.01.02 of ZTE ZXCLOUD GoldenData VAP product have encryption problems vulnerability. Attackers…
CVE-2019-12924 — Critical (CVSS 9.8): MailEnable Enterprise Premium 10.23 was vulnerable to XML External Entity Injection (XXE) attacks that could be…

Browse all CWE-311 (Missing Encryption of Sensitive Data) vulnerabilities →