CVE-2023-34308: Ashlar-Vellum Graphite VC6 File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability

This month

HIGH 8.8DOWNGRADE

CVE-2023-34308 is a high-severity flaw (CVSS 8.8) affecting graphite. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Ashlar-Vellum Graphite VC6 File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Ashlar-Vellum Graphite. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of VC6 files. The issue results from the lack of prope

Why this priority

High severity

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.9% (top 40%)
CISA exploited list	No
Weakness	CWE-787
Published	2024-05-03
Last modified	2026-06-17

Publisher (CNA): Zero Day Initiative · Vendor: ashlar

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

Am I affected?

Timeline

2024-05-03 02:15 UTCPublished CVE record published
2026-06-17 06:03 UTCUpdated Record last modified

ashlar graphite DOWNGRADE

Affected: 13.0.46

Fixed in: no fixed release known

Safe to downgrade to: a release before 13.0.46

1. Check installed version

apt-cache policy graphite || rpm -q graphite || graphite --version

2. No fixed release: DOWNGRADE to a release before 13.0.46 (Debian / Ubuntu)

apt-cache madison graphite sudo apt install graphite=<VERSION_BEFORE_13.0.46> sudo apt-mark hold graphite

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list graphite sudo dnf downgrade graphite-<VERSION_BEFORE_13.0.46> sudo dnf versionlock add graphite

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2023-34308?

graphite: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2023-34308 being exploited?

CVE-2023-34308 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-2023-34308 affect?

CVE-2023-34308 affects graphite. Severity is high (CVSS 8.8). Ashlar-Vellum Graphite VC6 File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Ashlar-Vellum Graphite. User interaction is r

How urgent is CVE-2023-34308?

Priority 46/100. High severity

Related CVEs

CVE-2024-13051 HIGH 7.8 DOWNGRADE Ashlar-Vellum Graphite VC6 File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability
CVE-2024-13050 HIGH 7.8 DOWNGRADE Ashlar-Vellum Graphite VC6 File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability
CVE-2023-39936 HIGH 7.8 UPGRADE In Ashlar-Vellum Graphite v13.0.48, the affected application lacks proper validation of user-supplied data
CVE-2023-39427 HIGH 7.8 UPGRADE UPGRADE In Ashlar-Vellum Cobalt, Xenon, Argon, Lithium, and Cobalt Share v12 SP0 Build (1204.77), the affected applic
CVE-2023-34307 HIGH 8.8 DOWNGRADE Ashlar-Vellum Graphite VC6 File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability

References

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