CVE-2020-36244: The daemon in GENIVI diagnostic log and trace (DLT), is vulnerable to a heap-based buffer overflow that could

Q: How do I fix CVE-2020-36244?

diagnostic log and trace: upgrade to 2.18.6; debian linux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Q: Is CVE-2020-36244 being exploited?

CVE-2020-36244 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2020-36244 affect?

CVE-2020-36244 affects diagnostic log and trace, debian linux. Severity is critical (CVSS 9.8). The daemon in GENIVI diagnostic log and trace (DLT), is vulnerable to a heap-based buffer overflow that could allow an attacker to remotely execute arbitrary code on the DLT-Daemon (versions prior to 2.18.6).

Q: How urgent is CVE-2020-36244?

Priority 67/100. Critical severity; EPSS top 9%: very likely to be exploited; Remotely exploitable, no login, no user action; On your watchlist

This week

CRITICAL 9.8REMOTEWATCHLISTUPGRADEMITIGATE

CVE-2020-36244 is a critical-severity flaw (CVSS 9.8) affecting diagnostic log and trace, debian linux. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The daemon in GENIVI diagnostic log and trace (DLT), is vulnerable to a heap-based buffer overflow that could allow an attacker to remotely execute arbitrary code on the DLT-Daemon (versions prior to 2.18.6).

Why this priority

Critical severity
EPSS top 9%: very likely to be exploited
Remotely exploitable, no login, no user action
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	4.2% (top 9%)
CISA exploited list	No
Weakness	CWE-787
Published	2021-02-10
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: debian · genivi

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2021-02-10 07:15 UTCPublished CVE record published
2026-06-17 03:15 UTCUpdated Record last modified

genivi diagnostic log and trace UPGRADE

Affected: < 2.18.6

Fixed in: 2.18.6

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy diagnostic-log-and-trace || rpm -q diagnostic-log-and-trace || diagnostic-log-and-trace --version

2. UPGRADE to 2.18.6 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade diagnostic-log-and-trace

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade diagnostic-log-and-trace

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

debian debian linux MITIGATE

Affected: 10.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 10.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2020-36244?

diagnostic log and trace: upgrade to 2.18.6; debian linux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2020-36244 being exploited?

CVE-2020-36244 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2020-36244 affect?

CVE-2020-36244 affects diagnostic log and trace, debian linux. Severity is critical (CVSS 9.8). The daemon in GENIVI diagnostic log and trace (DLT), is vulnerable to a heap-based buffer overflow that could allow an attacker to remotely execute arbitrary code on the DLT-Daemon (versions prior to 2.18.6).

How urgent is CVE-2020-36244?

Priority 67/100. Critical severity; EPSS top 9%: very likely to be exploited; Remotely exploitable, no login, no user action; On your watchlist

Software pages

Debian vulnerabilities

Related CVEs

CVE-2022-39837 MEDIUM 5.5 UPGRADE An issue was discovered in Connected Vehicle Systems Alliance (COVESA) dlt-daemon through 2.18.8
CVE-2022-39836 MEDIUM 5.5 UPGRADE An issue was discovered in Connected Vehicle Systems Alliance (COVESA) dlt-daemon through 2.18.8
CVE-2022-31291 HIGH 7.5 DOWNGRADE MITIGATE An issue in dlt_config_file_parser.c of dlt-daemon v2.18.8 allows attackers to cause a double free via crafted
CVE-2021-29507 MEDIUM 5.7 UPGRADE GENIVI Diagnostic Log and Trace (DLT) provides a log and trace interface
CVE-2020-29394 HIGH 7.8 UPGRADE MITIGATE A buffer overflow in the dlt_filter_load function in dlt_common.c from dlt-daemon through 2.18.5 (GENIVI Diagn

References

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