How severe is CVE-2019-12567?

CVE-2019-12567 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2019-12567 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-12567?

CVE-2019-12567 affects Open Tftp Server Project Open Tftp Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-12567?

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

When was CVE-2019-12567 published?

CVE-2019-12567 was published on 2019-12-23 and last updated on 2026-06-17.

CVE-2019-12567

CVE-2019-12567 is a critical-severity vulnerability in Open Tftp Server Project Open Tftp Server with a CVSS 3.x base score of 9.8. 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-787.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 2% (81st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-787
Affected product: Open Tftp Server Project Open Tftp Server
Published: 2019-12-23
Last modified: 2026-06-17

Description

Stack-based overflow vulnerability in the logMess function in Open TFTP Server MT 1.65 and earlier allows remote attackers to perform a denial of service or execute arbitrary code via a long TFTP error packet, a different vulnerability than CVE-2018-10387 and CVE-2019-12568.

Frequently asked questions

What is CVE-2019-12567?: Stack-based overflow vulnerability in the logMess function in Open TFTP Server MT 1.65 and earlier allows remote attackers to perform a denial of service or execute arbitrary code via a long TFTP error packet, a different vulnerability than CVE-2018-10387 and CVE-2019-12568.
How severe is CVE-2019-12567?: CVE-2019-12567 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2019-12567 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-12567?: CVE-2019-12567 affects Open Tftp Server Project Open Tftp Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-12567?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2019-12567 published?: CVE-2019-12567 was published on 2019-12-23 and last updated on 2026-06-17.

References

https://sourceforge.net/p/tftp-server/discussion/550564/thread/a586ce62/

Affected products (1)

cpe:2.3:a:open_tftp_server_project:open_tftp_server:*:*:*:*:mt:*:*:*

More vulnerabilities in Open Tftp Server Project Open Tftp Server

CVE-2019-12568 — Critical (CVSS 9.8): Stack-based overflow vulnerability in the logMess function in Open TFTP Server SP 1.66 and earlier allows remote…
CVE-2018-10389 — Critical (CVSS 9.8): Format string vulnerability in the logMess function in TFTP Server MT 1.65 and earlier allows remote attackers to…
CVE-2018-10388 — Critical (CVSS 9.8): Format string vulnerability in the logMess function in TFTP Server SP 1.66 and earlier allows remote attackers to…
CVE-2018-10387 — Critical (CVSS 9.8): Heap-based overflow vulnerability in TFTP Server SP 1.66 and earlier allows remote attackers to perform a denial of…
CVE-2020-26130 — High (CVSS 7.8): Issues were discovered in Open TFTP Server multithreaded 1.66 and Open TFTP Server single port 1.66. Due to…

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