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CVE-2020-8037

26
FAUCET Score

CVE-2020-8037 describes a denial-of-service vulnerability in tcpdump versions prior to 4.9.3, specifically within its ppp decapsulator, which can be exploited to allocate excessive memory. This vulnerability affects products from Apple, Debian, and Fedora Project. Rated 7.5 HIGH on CVSS, it is a network-exploitable flaw requiring no user interaction, leading to high availability impact. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
4.9.3CPE matchmatch criteria
cpe:2.3:a:tcpdump:tcpdump:4.9.3:*:*:*:*:*:*:*
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:*:*:*:*:*:*:*
< 10.14.6CPE matchmatch criteria
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*

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
3.07%
Probability of exploitation in next 30 days
EPSS Percentile
86.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0307 is in the 75th percentile among its peer group of 51,485 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

Patch Available

Vendor Patches (6)

github_advisorypatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: 19152-16820Fixed in: 4.9.3-3
microsoftpatch availablevia msrc
Product: 19153-16823Fixed in: 4.9.3-3
microsoftpatch availablevia msrc
Product: cm1 tcpdump 4.9.3-3 on CBL Mariner 1.0Fixed in: 4.9.3-3
microsoftpatch availablevia msrc
Product: cbl2 tcpdump 4.9.3-3 on CBL Mariner 2.0Fixed in: 4.9.3-3
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: tcpdump-14:4.9.3-2.el8
View patch

Vendor Advisories (2)

microsoft2020-Nov/CVE-2020-8037Important

ppp decapsulator can be convinced to allocate a large amount of memory

Nov 10, 2020
redhatCVE-2020-8037Low

tcpdump: ppp decapsulator can be convinced to allocate a large amount of memory

Apr 20, 2020

References

seclists.org / fulldisclosure/2021/Apr/51
Mailing ListThird Party Advisory
github.com / the-tcpdump-group/tcpdump/commit/32027e199368dad9508965aae8cd8de5b6ab5231
PatchThird Party Advisory
lists.debian.org / debian-lts-announce/2020/11/msg00018.html
Mailing ListThird Party Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/F2MX34MJIUJQGL6CMEPLTKFOOOC3CJ4Z
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/LWDBONZVLC6BAOR2KM376DJCM4H3FERV
support.apple.com / kb/HT212325
Third Party Advisory
support.apple.com / kb/HT212326
Third Party Advisory
support.apple.com / kb/HT212327
Third Party Advisory