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CVE-2023-36747

22
FAUCET Score

CVE-2023-36747 describes multiple heap-based buffer overflow vulnerabilities in GTKWave 3.3.115, specifically within the fstReaderIterBlocks2 fstWritex len functionality, affecting the tonybybell gtkwave product. This vulnerability, triggered by a specially crafted .fst file, can lead to memory corruption when the beg_time does not align with the time table start. With a CVSS score of 7.8 (HIGH), it requires user interaction (UI:R) to open a malicious file, but successful exploitation could result in high confidentiality, integrity, and availability impacts (C:H/I:H/A:H). Currently, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
3.3.115CPE matchmatch criteria
cpe:2.3:a:tonybybell:gtkwave:3.3.115:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.0HIGH

CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.0
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.38%
Probability of exploitation in next 30 days
EPSS Percentile
30.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0038 is in the 29th percentile among its peer group of 11,621 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

talosintelligence.com / vulnerability_reports/TALOS-2023-1793
lists.debian.org / debian-lts-announce/2024/04/msg00007.html
talosintelligence.com / vulnerability_reports/TALOS-2023-1793
ExploitThird Party Advisory