7.5

CVE-2020-9494: apache software foundation apache traffic server

CVSS: 7.5v3.1HighModified
AliasesUBUNTU-CVE-2020-9494DEBIAN-CVE-2020-9494DSA-4710-1
Published 24-06-2020Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2020-9494 is a high (CVSS 7.5) vulnerability in apache software foundation apache traffic server. EPSS estimates a 3.58% chance of exploitation in the next 30 days, higher than 89.2% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
3.58%
0%100%
Low · -0.40 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 0 · Related 1
USN-5360-1

Timeline

  1. 24-06-2020
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

Apache Traffic Server 6.0.0 to 6.2.3, 7.0.0 to 7.1.10, and 8.0.0 to 8.0.7 is vulnerable to certain types of HTTP/2 HEADERS frames that can cause the server to allocate a large amount of memory and spin the thread.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

3.58%

Chance of exploitation in the next 30 days

Percentile

89%

Versus all other CVEs

30-day change

-0.40 pp

From 3.98% on 18-09-2026

18-09-202618-10-2026
EPSS score
3.58%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Debian2 products
  • trafficserver< 8.0.8+ds-1 | < 8.0.2+ds-1+deb10u3
  • debian_linuxEOL10.0
Apache1 product
  • traffic_server≥ 6.0.0, ≤ 6.2.3 | ≥ 7.0.0, ≤ 7.1.10 | ≥ 8.0.0, ≤ 8.0.7
Apache software foundation1 product
Ubuntu1 product
  • trafficserverAll versions (No fix recorded)

4 vendors · 5 products

References

7 links