CVE-2020-26421: debian debian_linux Out-of-bounds Read
CVSS: 5.3v3.1MediumModified
AliasesUBUNTU-CVE-2020-26421DEBIAN-CVE-2020-26421
Published 11-12-2020Last modified 04-08-2024
Vulnerability summary
CVE-2020-26421 is a medium (CVSS 5.3) Out-of-bounds Read vulnerability in debian debian_linux. EPSS estimates a 2.55% chance of exploitation in the next 30 days, higher than 84.8% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
5.3/10
010
Medium · v3.1 (NVD)EPSS score
2.55%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference
Advisory lineage
Upstream 0 · Downstream 6 · Related 5Timeline
- 11-12-2020PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
Crash in USB HID protocol dissector and possibly other dissectors in Wireshark 3.4.0 and 3.2.0 to 3.2.8 allows denial of service via packet injection or crafted capture file.
CVSS metrics
5 scores · 4 sources · 2 versionsMedium 5.3Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:LSources4 sources · 4.2–5.3
- CVE.orgCNA4.2MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:LDiffers
- OSV · UbuntuEcosystem advisory · calculated5.3MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- OSV · DebianEcosystem advisory · calculated5.3MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Medium 5.0Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:N/I:N/A:PSourcesSingle source
EPSS trend
Probability
2.55%
Chance of exploitation in the next 30 days
Percentile
85%
Versus all other CVEs
30-day change
0.00 pp
From 2.55% on 19-09-2026
19-09-202619-10-2026
EPSS score2.55%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundExploit Reference (gitlab.com)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Debian2 products
- wireshark< 3.4.1-1
- debian_linuxEOL9.0
Fedoraproject1 product
- fedoraEOL32 | 33
Oracle1 product
The wireshark foundation1 product
- wireshark3.4.0 | ≥ 3.2.0 to < 3.2.9 (No fix recorded)
Ubuntu1 product
- wiresharkAll versions (No fix recorded)
Wireshark1 product
- wiresharkEOL≥ 3.2.0, ≤ 3.2.8 | 3.4.0
6 vendors · 7 products
References
12 links- gitlab.com/wireshark/wireshark/-/issues/16958X Refsource MISCREPORTExploitIssue TrackingThird Party Advisory
- gitlab.com/gitlab-org/cves/-/blob/master/2020/CVE-2020-26421.jsonX Refsource CONFIRMREPORTThird Party Advisory
lists.debian.org/debian-lts-announce/2021/02/msg00008.htmlMailing ListX Refsource MLISTThird Party Advisory