CVE-2022-33070: fedoraproject fedora
CVSS: 5.5v3.1MediumModified
AliasesALPINE-CVE-2022-33070UBUNTU-CVE-2022-33070USN-5531-1DEBIAN-CVE-2022-33070CGA-gr4g-jq85-4cc5CGA-xggv-h8g4-w4mg
Published 22-06-2022Last modified 08-10-2026
Vulnerability summary
CVE-2022-33070 is a medium (CVSS 5.5) vulnerability in fedoraproject fedora. EPSS estimates a 1.11% chance of exploitation in the next 30 days, higher than 65.4% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
5.5/10
010
Medium · v3.1 (NVD)EPSS score
1.11%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github
Advisory lineage
Upstream 0 · Downstream 1 · Related 3Timeline
- 22-06-2022PublishedVulnerability first disclosed.
- 08-10-2026Last modifiedVulnerability information updated.
Description
Protobuf-c v1.4.0 was discovered to contain an invalid arithmetic shift via the function parse_tag_and_wiretype in protobuf-c/protobuf-c.c. This vulnerability allows attackers to cause a Denial of Service (DoS) via unspecified vectors.
CVSS metrics
5 scores · 4 sources · 2 versionsMedium 5.5Preferred score · NVD (NIST)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:HSourcesAll 4 agree
- OSV · AlpineEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Medium 4.3Preferred score · NVD (NIST)
AV:N/AC:M/Au:N/C:N/I:N/A:PSourcesSingle source
EPSS trend
Probability
1.11%
Chance of exploitation in the next 30 days
Percentile
65%
Versus all other CVEs
30-day change
0.00 pp
From 1.11% on 18-09-2026
18-09-202618-10-2026
EPSS score1.11%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundProtobuf C
Maturity: poc
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
Ubuntu9 products
- argyllAll versions (No fix recorded)
- ccextractorAll versions (No fix recorded)
- libgaduAll versions (No fix recorded)
- libpg-queryAll versions (No fix recorded)
- libsignal-protocol-cAll versions (No fix recorded)
Alpine1 product
- protobuf-c< 1.4.1-r0
Chainguard1 product
- protobuf-cAll versions (No fix recorded)
Debian1 product
- protobuf-c< 1.4.1-1
Fedoraproject1 product
- fedoraEOL36
Protobuf-c_project1 product
- protobuf-c1.4.0
Wolfi1 product
- protobuf-cAll versions (No fix recorded)
7 vendors · 15 products
References
10 links- github.com/protobuf-c/protobuf-c/issues/506X Refsource MISCExploitIssue TrackingPatchThird Party Advisory
- github.com/protobuf-c/protobuf-c/pull/508X Refsource MISCREPORTExploitIssue TrackingPatchThird Party Advisory
