CVE-2022-46456: nasm netwide_assembler Classic Buffer Overflow
CVSS: 7.8v3.1HighModified
AliasesUBUNTU-CVE-2022-46456DEBIAN-CVE-2022-46456
Published 04-01-2023Last modified 10-04-2025
Vulnerability summary
CVE-2022-46456 is a high (CVSS 7.8) Classic Buffer Overflow vulnerability in nasm netwide_assembler. EPSS estimates a 0.36% chance of exploitation in the next 30 days, higher than 28.4% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
7.8/10
010
High · v3.1 (CVE.org)EPSS score
0.36%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference
Timeline
- 04-01-2023PublishedVulnerability first disclosed.
- 10-04-2025Last modifiedVulnerability information updated.
Description
NASM v2.16 was discovered to contain a global buffer overflow in the component dbgdbg_typevalue at /output/outdbg.c.
CVSS metrics
4 scores · 4 sources · 1 versionHigh 7.8Preferred score · CVE.org (CNA)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HSources4 sources · 6.1–7.8
- OSV · UbuntuEcosystem advisory · calculated6.1MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:HDiffers
- OSV · DebianEcosystem advisory · calculated6.1MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:HDiffers
- NVDNIST6.1MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:HDiffers
EPSS trend
Probability
0.36%
Chance of exploitation in the next 30 days
Percentile
28%
Versus all other CVEs
30-day change
0.00 pp
From 0.36% on 20-09-2026
20-09-202620-10-2026
EPSS score0.36%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundExploit Reference (bugzilla.nasm.us)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Ubuntu2 products
- nasmAll versions (No fix recorded)
- qt6-webengineAll versions (No fix recorded)
Debian1 product
- nasmAll versions (No fix recorded)
Nasm1 product
- netwide_assembler2.16 | 2.16:rc10 | 2.16:rc11 | 2.16:rc12 | 2.16:rc4 | 2.16:rc5 | 2.16:rc6 | 2.16:rc7 | 2.16:rc8 | 2.16:rc9 | 2.16.01
3 vendors · 4 products
