5.3

CVE-2020-8516: torproject tor

CVSS: 5.3v3.1MediumModified
AliasesDEBIAN-CVE-2020-8516
Published 02-02-2020Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2020-8516 is a medium (CVSS 5.3) vulnerability in torproject tor. EPSS estimates a 2.50% chance of exploitation in the next 30 days, higher than 84.4% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
32/100
0100
Medium · default modelHow is this calculated?
CVSS score
5.3/10
010
Medium · v3.1 (NVD)
EPSS score
2.50%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Timeline

  1. 02-02-2020
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

The daemon in Tor through 0.4.1.8 and 0.4.2.x through 0.4.2.6 does not verify that a rendezvous node is known before attempting to connect to it, which might make it easier for remote attackers to discover circuit information. NOTE: The network team of Tor claims this is an intended behavior and not a vulnerability

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

2.50%

Chance of exploitation in the next 30 days

Percentile

84%

Versus all other CVEs

30-day change

0.00 pp

From 2.50% on 19-09-2026

19-09-202619-10-2026
EPSS score
2.50%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (hackerfactor.com)

    Maturity: unknown

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Debian1 product
  • torAll versions (No fix recorded)
Torproject1 product
  • tor≤ 0.4.1.8 | ≥ 0.4.2.0, ≤ 0.4.2.6

2 vendors · 2 products

References

5 links