CVE-2023-36321: Connected Vehicle Systems Alliance (COVESA) up to v2.18.8 was discovered to contain a buffer overflow via the

Q: How do I fix CVE-2023-36321?

dlt-daemon: upgrade to newer than 2.18.8. Exact commands for each OS are on this page.

Q: Is CVE-2023-36321 being exploited?

CVE-2023-36321 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-2023-36321 affect?

CVE-2023-36321 affects dlt-daemon. Severity is high (CVSS 7.5). Connected Vehicle Systems Alliance (COVESA) up to v2.18.8 was discovered to contain a buffer overflow via the component /shared/dlt_common.c.

Q: How urgent is CVE-2023-36321?

Priority 53/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

HIGH 7.5REMOTEUPGRADE

CVE-2023-36321 is a high-severity flaw (CVSS 7.5) affecting dlt-daemon. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Connected Vehicle Systems Alliance (COVESA) up to v2.18.8 was discovered to contain a buffer overflow via the component /shared/dlt_common.c.

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.1% (top 34%)
CISA exploited list	No
Weakness	CWE-120
Published	2023-10-17
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: covesa

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

Am I affected?

Timeline

2023-10-17 23:15 UTCPublished CVE record published
2026-06-17 06:06 UTCUpdated Record last modified

covesa dlt-daemon UPGRADE

Affected: <= 2.18.8

Fixed in: newer than 2.18.8

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy dlt-daemon || rpm -q dlt-daemon || dlt-daemon --version

2. UPGRADE to newer than 2.18.8 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade dlt-daemon

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade dlt-daemon

Note

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

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-2023-36321?

dlt-daemon: upgrade to newer than 2.18.8. Exact commands for each OS are on this page.

Is CVE-2023-36321 being exploited?

CVE-2023-36321 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-2023-36321 affect?

CVE-2023-36321 affects dlt-daemon. Severity is high (CVSS 7.5). Connected Vehicle Systems Alliance (COVESA) up to v2.18.8 was discovered to contain a buffer overflow via the component /shared/dlt_common.c.

How urgent is CVE-2023-36321?

Priority 53/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2023-26257 HIGH 7.5 UPGRADE An issue was discovered in the Connected Vehicle Systems Alliance (COVESA; formerly GENIVI) dlt-daemon through

References

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