CVE-2023-33864: StreamReader::ReadFromExternal in RenderDoc before 1.27 allows an Integer Overflow with a resultant Buffer Ove

Q: How do I fix CVE-2023-33864?

renderdoc: upgrade to 1.27. Exact commands for each OS are on this page.

Q: Is CVE-2023-33864 being exploited?

CVE-2023-33864 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-2023-33864 affect?

CVE-2023-33864 affects renderdoc. Severity is critical (CVSS 9.8). StreamReader::ReadFromExternal in RenderDoc before 1.27 allows an Integer Overflow with a resultant Buffer Overflow. It uses uint32_t(m_BufferSize-m_InputSize) even though m_InputSize can exceed m_BufferSize.

Q: How urgent is CVE-2023-33864?

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

This week

CRITICAL 9.8REMOTEUPGRADE

CVE-2023-33864 is a critical-severity flaw (CVSS 9.8) affecting renderdoc. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

StreamReader::ReadFromExternal in RenderDoc before 1.27 allows an Integer Overflow with a resultant Buffer Overflow. It uses uint32_t(m_BufferSize-m_InputSize) even though m_InputSize can exceed m_BufferSize.

Why this priority

Critical severity
EPSS top 9%: very likely to be exploited
Public exploit reference
Remotely exploitable, no login, no user action

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-190
Published	2023-06-07
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: renderdoc

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

Am I affected?

Timeline

2023-06-07 20:15 UTCPublished CVE record published
2026-06-17 06:02 UTCUpdated Record last modified

renderdoc renderdoc UPGRADE

Affected: < 1.27

Fixed in: 1.27

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 1.27 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade renderdoc

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade renderdoc

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-2023-33864?

renderdoc: upgrade to 1.27. Exact commands for each OS are on this page.

Is CVE-2023-33864 being exploited?

CVE-2023-33864 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-2023-33864 affect?

CVE-2023-33864 affects renderdoc. Severity is critical (CVSS 9.8). StreamReader::ReadFromExternal in RenderDoc before 1.27 allows an Integer Overflow with a resultant Buffer Overflow. It uses uint32_t(m_BufferSize-m_InputSize) even though m_InputSize can exceed m_BufferSize.

How urgent is CVE-2023-33864?

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

Related CVEs

CVE-2023-33865 HIGH 7.8 UPGRADE RenderDoc before 1.27 allows local privilege escalation via a symlink attack
CVE-2023-33863 CRITICAL 9.8 UPGRADE SerialiseValue in RenderDoc before 1.27 allows an Integer Overflow with a resultant Buffer Overflow

References

← Back to latest CVEs