CVE-2019-15800

highpriority · track · 40EPSS 0.039 · 90 %ileEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

3.87% (90th) EPSS

CVSS 10 · high

Is it mine?

20 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

EPSS · scored 2026-10-27

An issue was discovered on Zyxel GS1900 devices with firmware before 2.50(AAHH.0)C0. Due to lack of input validation in the cmd_sys_traceroute_exec(), cmd_sys_arp_clear(), and cmd_sys_ping_exec() functions in the libclicmd.so library contained in the firmware, an attacker could leverage these functions to call system() and execute arbitrary commands on the switches. (Note that these functions are currently not called in this version of the firmware, however an attacker could use other vulnerabilities to finally use these vulnerabilities to gain code execution.)

cvss

Technical severity, 0–10. One row per scoring source.

10.0

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 9–10

v2.010highAV:N/AC:L/Au:N/C:C/I:C/A:Cprimary · NVD / NIST USexploitability 10 · impact 10

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v3.19.8criticalAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.19criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-78USprimaryCWE-20US

affected products (20)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
Zyxel Communications Corp. GS1900-10HP≤ 2.50(AAHJ.0)C0fstec_bduRU
Zyxel Communications Corp. GS1900-10HP≤ 2.50(AAZI.0)C0fstec_bduRU
Zyxel Communications Corp. GS1900-16≤ 2.50(AAHJ.0)C0fstec_bduRU
Zyxel Communications Corp. GS1900-24≤ 2.50(AAHL.0)C0fstec_bduRU
Zyxel Communications Corp. GS1900-24E≤ 2.50(AAHK.0)C0fstec_bduRU
Zyxel Communications Corp. GS1900-24HP≤ 2.50(AAHM.0)C0fstec_bduRU
Zyxel Communications Corp. GS1900-48≤ 2.50(AAHN.0)C0fstec_bduRU
Zyxel Communications Corp. GS1900-48HP≤ 2.50(AAHO.0)C0fstec_bduRU
Zyxel Communications Corp. GS1900-8≤ 2.50(AAHH.0)C0fstec_bduRU
Zyxel Communications Corp. GS1900-8HP≤ 2.50(AAHI.0)C0fstec_bduRU
zyxel gs1900-10hp firmware< 2.50\(aazi.0\)c0nvdUScpe:2.3:o:zyxel:gs1900-10hp_firmware:*:*:*:*:*:*:*:*
zyxel gs1900-16 firmware< 2.50\(aahj.0\)c0nvdUScpe:2.3:o:zyxel:gs1900-16_firmware:*:*:*:*:*:*:*:*
zyxel gs1900-24 firmware< 2.50\(aahl.0\)c0nvdUScpe:2.3:o:zyxel:gs1900-24_firmware:*:*:*:*:*:*:*:*
zyxel gs1900-24e firmware< 2.50\(aahk.0\)c0nvdUScpe:2.3:o:zyxel:gs1900-24e_firmware:*:*:*:*:*:*:*:*
zyxel gs1900-24hp firmware< 2.50\(aahm.0\)c0nvdUScpe:2.3:o:zyxel:gs1900-24hp_firmware:*:*:*:*:*:*:*:*
zyxel gs1900-48 firmware< 2.50\(aahn.0\)c0nvdUScpe:2.3:o:zyxel:gs1900-48_firmware:*:*:*:*:*:*:*:*
zyxel gs1900-48hp firmware< 2.50\(aaho.0\)c0nvdUScpe:2.3:o:zyxel:gs1900-48hp_firmware:*:*:*:*:*:*:*:*
zyxel gs1900-8 firmware< 2.50\(aahh.0\)c0nvdUScpe:2.3:o:zyxel:gs1900-8_firmware:*:*:*:*:*:*:*:*
zyxel gs1900-8hp firmware< 2.50\(aahi.0\)c0nvdUScpe:2.3:o:zyxel:gs1900-8hp_firmware:*:*:*:*:*:*:*:*

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu nvd NVD CVE.org MITRE

published 2019-11-14modified 2026-06-17

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references (7)

External citations — patches, advisories, analysis.

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