Is CVE-2019-15802 in the CISA KEV catalog?

No. CVE-2019-15802 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2019-15802?

CVE-2019-15802 has a CVSS v3 base score of 5.9 (MEDIUM).

What is the EPSS score for CVE-2019-15802?

CVE-2019-15802 has an EPSS score of 1.50% (71th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2019-15802?

Upgrade gs1900-10hp firmware to 2.50(aazi.0)c0 or later. Fixes are available for 9 affected products.

CVE & CISA-KEV Catalog

CVE-2019-15802

MEDIUMEPSS 71th pctl

5.9

CVSS v3

NVD

Description

An issue was discovered on Zyxel GS1900 devices with firmware before 2.50(AAHH.0)C0. The firmware hashes and encrypts passwords using a hardcoded cryptographic key in sal_util_str_encrypt() in libsal.so.0.0. The parameters (salt, IV, and key data) are used to encrypt and decrypt all passwords using AES256 in CBC mode. With the parameters known, all previously encrypted passwords can be decrypted. This includes the passwords that are part of configuration backups or otherwise embedded as part of the firmware.

CWE-798Hard-coded Credentials

How to fix

Remediation Available

gs1900-10hp firmwareNVD

Affected:< 2.50(aazi.0)c0Fixed in:2.50(aazi.0)c0CVE-2019-15802derived from NVD

gs1900-16 firmwareNVD

Affected:< 2.50(aahj.0)c0Fixed in:2.50(aahj.0)c0CVE-2019-15802derived from NVD

gs1900-24 firmwareNVD

Affected:< 2.50(aahl.0)c0Fixed in:2.50(aahl.0)c0CVE-2019-15802derived from NVD

gs1900-24e firmwareNVD

Affected:< 2.50(aahk.0)c0Fixed in:2.50(aahk.0)c0CVE-2019-15802derived from NVD

gs1900-24hp firmwareNVD

Affected:< 2.50(aahm.0)c0Fixed in:2.50(aahm.0)c0CVE-2019-15802derived from NVD

gs1900-48 firmwareNVD

Affected:< 2.50(aahn.0)c0Fixed in:2.50(aahn.0)c0CVE-2019-15802derived from NVD

gs1900-48hp firmwareNVD

Affected:< 2.50(aaho.0)c0Fixed in:2.50(aaho.0)c0CVE-2019-15802derived from NVD

gs1900-8 firmwareNVD

Affected:< 2.50(aahh.0)c0Fixed in:2.50(aahh.0)c0CVE-2019-15802derived from NVD

gs1900-8hp firmwareNVD

Affected:< 2.50(aahi.0)c0Fixed in:2.50(aahi.0)c0CVE-2019-15802derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

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

Exploit Intelligence

1.50%probability of exploitation in 30 days

71stpercentile

Elevated risk: more likely to be exploited than 71% of all known CVEs.

References

Exploit1

jasper.la

Vendor Advisory1

zyxel.com

Related Vulnerabilities

Other CWE-798 (Hard-coded Credentials) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2022-26138	Critical	9.8	98%	KEV	-
CVE-2024-3272	Critical	9.8	98%	KEV	-
CVE-2025-30406	Critical	9.0	94%	KEV	Fix
CVE-2024-28987	Critical	9.1	93%	KEV	Fix
CVE-2019-15976	Critical	9.8	93%	-	Fix
CVE-2024-20439	Critical	9.8	92%	KEV	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.