Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2020-9481

26
FAUCET Score

CVE-2020-9481 describes a high-severity HTTP/2 slow read vulnerability affecting Apache Traffic Server (ATS) versions 6.0.0-6.2.3, 7.0.0-7.1.9, and 8.0.0-8.0.6, including those distributed with Debian Linux. This flaw, rated 7.5 CVSSv3.1, allows an unauthenticated attacker to remotely cause a denial of service (availability impact) with low attack complexity. While no public exploit code or active exploitation has been observed, and community discussion is minimal, organizations using affected ATS versions should prioritize patching to mitigate this risk.

Impacted Technologies

VendorProductVersion(s)CPE
>= 6.0.0, <= 6.2.3CPE matchmatch criteria
cpe:2.3:a:apache:traffic_server:*:*:*:*:*:*:*:*
>= 7.0.0, <= 7.1.9CPE matchmatch criteria
cpe:2.3:a:apache:traffic_server:*:*:*:*:*:*:*:*
>= 8.0.0, <= 8.0.6CPE matchmatch criteria
cpe:2.3:a:apache:traffic_server:*:*:*:*:*:*:*:*
10.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

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
2.39%
Probability of exploitation in next 30 days
EPSS Percentile
82.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0239 is in the 68th 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

Remediation records are not available for this CVE.

References

lists.apache.org / thread.html/r21ddaf0a4a973f3c43c7ff399ae50d2f858f13f87bd6a9551c5cf6db%40%3Cannounce.trafficserver.apache.org%3E
Mailing ListPatchThird Party Advisory
debian.org / security/2020/dsa-4672
Third Party Advisory