How severe is CVE-2018-10388?

CVE-2018-10388 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-2018-10388 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-10388?

CVE-2018-10388 affects Open Tftp Server Project Open Tftp Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-10388?

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-2018-10388 published?

CVE-2018-10388 was published on 2019-12-23 and last updated on 2026-06-17.

CVE-2018-10388

CVE-2018-10388 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-134.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 4% (90th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-134
Affected product: Open Tftp Server Project Open Tftp Server
Published: 2019-12-23
Last modified: 2026-06-17

Description

Format string vulnerability in the logMess function in TFTP Server SP 1.66 and earlier allows remote attackers to perform a denial of service or execute arbitrary code via format string sequences in a TFTP error packet.

Frequently asked questions

What is CVE-2018-10388?: Format string vulnerability in the logMess function in TFTP Server SP 1.66 and earlier allows remote attackers to perform a denial of service or execute arbitrary code via format string sequences in a TFTP error packet.
How severe is CVE-2018-10388?: CVE-2018-10388 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-2018-10388 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-10388?: CVE-2018-10388 affects Open Tftp Server Project Open Tftp Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-10388?: 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-2018-10388 published?: CVE-2018-10388 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:*:*:*:*:sp:*:*:*

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-2019-12567 — Critical (CVSS 9.8): Stack-based overflow vulnerability in the logMess function in Open TFTP Server MT 1.65 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-2018-10387 — 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…

All CVEs affecting Open Tftp Server Project Open Tftp Server →

Other CWE-134 vulnerabilities

CVE-2012-1851 — Critical (CVSS 10.0): Format string vulnerability in the Print Spooler service in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2,…
CVE-2012-0242 — Critical (CVSS 10.0): Format string vulnerability in Advantech/BroadWin WebAccess before 7.0 allows remote attackers to execute arbitrary…
CVE-2011-2475 — Critical (CVSS 10.0): Format string vulnerability in ECTrace.dll in the iMailGateway service in the Internet Mail Gateway in OneBridge Server…
CVE-2011-1568 — Critical (CVSS 10.0): Format string vulnerability in the logText function in shmemmgr9.dll in IGSSdataServer.exe 9.00.00.11074, and…
CVE-2010-4235 — Critical (CVSS 10.0): Format string vulnerability in RealNetworks Helix Server 12.x, 13.x, and 14.x before 14.2, and Helix Mobile Server…
CVE-2011-0270 — Critical (CVSS 10.0): Format string vulnerability in nnmRptConfig.exe in HP OpenView Network Node Manager (OV NNM) 7.51 and 7.53 allows…

Browse all CWE-134 vulnerabilities →