8.8

CVE-2018-16515: debian debian_linux

CVSS: 8.8v3.0HighModified
AliasesGHSA-fmvh-rvq5-hhjxPYSEC-2026-845UBUNTU-CVE-2018-16515
Published 18-09-2018Last modified 05-08-2024
Open JSON

Vulnerability summary

CVE-2018-16515 is a high (CVSS 8.8) vulnerability in debian debian_linux. EPSS estimates a 1.54% chance of exploitation in the next 30 days, higher than 74.4% of scored vulnerabilities.

Overall risk
36/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.8/10
010
High · v3.0 (NVD)
EPSS score
1.54%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1 · Related 1
USN-6076-1

Timeline

  1. 18-09-2018
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

Description

Matrix Synapse before 0.33.3.1 allows remote attackers to spoof events and possibly have unspecified other impacts by leveraging improper transaction and event signature validation.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

1.54%

Chance of exploitation in the next 30 days

Percentile

74%

Versus all other CVEs

30-day change

0.00 pp

From 1.54% on 18-09-2026

18-09-202618-10-2026
EPSS score
1.54%

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
Matrix1 product
PyPI1 product
  • matrix-synapse< 0.33.2.1 | ≥ 0.33.3, < 0.33.3.1
Ubuntu1 product
  • matrix-synapse< 0.24.0+dfsg-1ubuntu0.1~esm1

4 vendors · 5 products

References

19 links
Show all 19 references