CVE-2022-22826: debian debian_linux Integer Overflow or Wraparound
CVSS: 8.8v3.1HighModified
AliasesALPINE-CVE-2022-22826UBUNTU-CVE-2022-22826DEBIAN-CVE-2022-22826
Published 08-01-2022Last modified 14-10-2026
Vulnerability summary
CVE-2022-22826 is a high (CVSS 8.8) Integer Overflow or Wraparound vulnerability in debian debian_linux. EPSS estimates a 2.96% chance of exploitation in the next 30 days, higher than 86.9% of scored vulnerabilities.
CVSS score
8.8/10
010
High · v3.1 (CVE.org)EPSS score
2.96%
0%100%
Low · +0.16 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 17 · Related 8Timeline
- 08-01-2022PublishedVulnerability first disclosed.
- 14-10-2026Last modifiedVulnerability information updated.
Description
nextScaffoldPart in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow.
CVSS metrics
6 scores · 5 sources · 2 versionsHigh 8.8Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HSourcesAll 5 agree
- OSV · AlpineEcosystem advisory · calculated8.8HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- OSV · UbuntuEcosystem advisory · calculated8.8HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated8.8HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- NVDNIST8.8HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Medium 6.8Preferred score · NVD (NIST)
AV:N/AC:M/Au:N/C:P/I:P/A:PSourcesSingle source
EPSS trend
Probability
2.96%
Chance of exploitation in the next 30 days
Percentile
87%
Versus all other CVEs
30-day change
+0.16 pp
From 2.80% on 18-09-2026
18-09-202618-10-2026
EPSS score2.96%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Ubuntu17 products
- ayttmAll versions (No fix recorded)
- cableswigAll versions (No fix recorded)
- cadaverAll versions (No fix recorded)
- coin3All versions (No fix recorded)
- expat< 2.1.0-4ubuntu1.4+esm4 | < 2.1.0-7ubuntu0.16.04.5+esm2 | < 2.2.5-3ubuntu0.4 | < 2.2.9-1ubuntu0.2 | < 2.4.3-1
Debian3 products
- expat< 2.4.3-1
- libxmltokAll versions (No fix recorded)
- debian_linuxEOL10.0 | 11.0
Alpine1 product
- expat< 2.2.10-r0 | < 2.2.10-r2 | < 2.4.3-r0
Libexpat_project1 product
- libexpat< 2.4.3
Siemens1 product
Tenable1 product
- nessus< 8.15.3 | ≥ 10.0.0, < 10.1.1
6 vendors · 24 products
