6.5

CVE-2016-2166: apache qpid_proton

Modified
AliasesUBUNTU-CVE-2016-2166GHSA-f5cf-f7px-xpmh
Published 12-04-2016Last modified 05-08-2024

Vulnerability summary

CVE-2016-2166 is a medium (CVSS 6.5) vulnerability in apache qpid_proton. EPSS estimates a 4.27% chance of exploitation in the next 30 days, higher than 91% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 6.5, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
6.5/10
010
Medium · v3.0 (NVD)
EPSS score
4.27%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1
RHBA-2018:0337

Timeline

  1. 12-04-2016
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

Description

The (1) proton.reactor.Connector, (2) proton.reactor.Container, and (3) proton.utils.BlockingConnection classes in Apache Qpid Proton before 0.12.1 improperly use an unencrypted connection for an amqps URI scheme when SSL support is unavailable, which might allow man-in-the-middle attackers to obtain sensitive information or modify data via unspecified vectors.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

4.27%

Chance of exploitation in the next 30 days

Percentile

91%

Versus all other CVEs

30-day change

No change 0.00 pp

From 4.27% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Apache1 product
Fedoraproject1 product
Org.apache.qpid1 product
  • proton-j< 0.12.1
Ubuntu1 product
  • qpid-protonAll versions (No fix recorded)

4 vendors · 4 products

References

14 links
Show all 14 references