SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2023-33863

SerialiseValue in RenderDoc before 1.27 allows an Integer Overflow with a resultant Buffer Overflow.

CRITICAL 9.8EPSS 4.19%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (4.19%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

SerialiseValue in RenderDoc before 1.27 allows an Integer Overflow with a resultant Buffer Overflow. 0xffffffff is sign-extended to 0xffffffffffffffff (SIZE_MAX) and then there is an attempt to add 1.

CVSS 3.1
9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
4.19% probability · 91th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-190
Affected
renderdoc/renderdoc
Source
cve@mitre.org
EPSS trend
0%3%5%26 October 2026: 4.19%26 October 202626 October 2026

EPSS 4.2% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.