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CVE-2020-28030

25
FAUCET Score

CVE-2020-28030 describes a denial-of-service vulnerability in Wireshark versions 3.2.0 through 3.2.7, where a specially crafted GQUIC packet could cause the dissector to crash. This high-severity vulnerability (CVSS 7.5) is network-exploitable with low attack complexity, potentially leading to a complete loss of availability for the affected Wireshark instance. While no public exploits or active exploitation have been observed, and community discussion is minimal, the flaw was addressed by correcting offset advancement in the GQUIC dissector.

Impacted Technologies

VendorProductVersion(s)CPE
>= 3.2.0, <= 3.2.7CPE matchmatch criteria
cpe:2.3:a:wireshark:wireshark:*:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
32CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
33CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.07%
Probability of exploitation in next 30 days
EPSS Percentile
79.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0207 is in the 64th percentile among its peer group of 51,553 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: wireshark

Vendor Advisories (1)

redhatCVE-2020-28030Moderate

wireshark: malformed packet on wire could make GQUIC protocol dissector loop

Oct 30, 2020

References

gitlab.com / wireshark/wireshark/-/commit/b287e7165e8aa89cde6ae37e7c257c5d87d16b9b
PatchThird Party Advisory
gitlab.com / wireshark/wireshark/-/issues/16887
ExploitIssue TrackingThird Party Advisory
lists.debian.org / debian-lts-announce/2021/02/msg00008.html
Mailing ListThird Party Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/UHZSVK7PO2LTGFQXFHFXY6SOMSQ7UPRS
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/V2667E6WKVE56G66BVBVD7LJPIDOJ7K3
wireshark.org / security/wnpa-sec-2020-15.html
Vendor Advisory