CVE-2023-36328: fedoraproject fedora Integer Overflow or Wraparound
CVSS: 9.8v3.1CriticalModified
AliasesMGASA-2023-0265UBUNTU-CVE-2023-36328USN-6402-1DEBIAN-CVE-2023-36328DLA-3857-1
Published 01-09-2023Last modified 26-06-2025
Vulnerability summary
CVE-2023-36328 is a critical (CVSS 9.8) Integer Overflow or Wraparound vulnerability in fedoraproject fedora. EPSS estimates a 1.26% chance of exploitation in the next 30 days, higher than 69.3% of scored vulnerabilities.
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)EPSS score
1.26%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 0 · Related 1Timeline
- 01-09-2023PublishedVulnerability first disclosed.
- 26-06-2025Last modifiedVulnerability information updated.
Description
Integer Overflow vulnerability in mp_grow in libtom libtommath before commit beba892bc0d4e4ded4d667ab1d2a94f4d75109a9, allows attackers to execute arbitrary code and cause a denial of service (DoS).
CVSS metrics
4 scores · 4 sources · 1 versionCritical 9.8Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HSourcesAll 4 agree
- OSV · UbuntuEcosystem advisory · calculated9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- NVDNIST9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
1.26%
Chance of exploitation in the next 30 days
Percentile
69%
Versus all other CVEs
30-day change
0.00 pp
From 1.26% on 20-09-2026
20-09-202620-10-2026
EPSS score1.26%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Mageia2 products
- libtommath< 1.2.1-1.mga8
- libtommath< 1.2.1-1.mga9
Debian1 product
- libtommath< 1.2.0-6+deb12u1 | < 1.2.1-1 | < 1.2.0-6+deb11u1
Fedoraproject1 product
- fedoraEOL37 | 38 | 39
Libtom1 product
- libtommath< 1.2.1
Ubuntu1 product
- libtommath< 0.42.0-1.2ubuntu0.1~esm1 | < 1.0.1-1ubuntu0.1~esm1 | < 1.2.0-3ubuntu0.1 | < 1.2.0-6ubuntu0.22.04.1
5 vendors · 6 products