CVE-2018-3973
A specially crafted CAL image processed via the application can lead to an out of bounds write overwriting arbitrary data.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.89%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
An exploitable out of bounds write exists in the CAL parsing functionality of Canvas Draw version 5.0.0. A specially crafted CAL image processed via the application can lead to an out of bounds write overwriting arbitrary data. An attacker can deliver a PCX image to trigger this vulnerability and gain code execution.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 1.89% probability · 79th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-787
- Affected
- canvasgfx/canvas draw
- Source
- talos-cna@cisco.com
EPSS 1.9% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://www.securityfocus.com/bid/106809Broken Link, Third Party Advisory, VDB Entry
- https://talosintelligence.com/vulnerability_reports/TALOS-2018-0638Exploit, Third Party Advisory
- http://www.securityfocus.com/bid/106809Broken Link, Third Party Advisory, VDB Entry
- https://talosintelligence.com/vulnerability_reports/TALOS-2018-0638Exploit, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.