6.5

CVE-2021-39532: juniper libslax NULL Pointer Dereference

CVSS: 6.5v3.1MediumModified
Published 20-09-2021Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2021-39532 is a medium (CVSS 6.5) NULL Pointer Dereference vulnerability in juniper libslax. EPSS estimates a 0.86% chance of exploitation in the next 30 days, higher than 57.6% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
36/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.86%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github

Timeline

  1. 20-09-2021
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

An issue was discovered in libslax through v0.22.1. A NULL pointer dereference exists in the function slaxLexer() located in slaxlexer.c. It allows an attacker to cause Denial of Service.

CVSS metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

0.86%

Chance of exploitation in the next 30 days

Percentile

58%

Versus all other CVEs

30-day change

0.00 pp

From 0.86% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.86%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • githubUnverified

    Libslax

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Juniper1 product

1 vendor · 1 product

References

1 links