10

CVE-2020-24355: zyxel vmg5313-b30b_firmware

Modified
Published 02-09-2020Last modified 04-08-2024

Vulnerability summary

CVE-2020-24355 is a high (CVSS 10.0) vulnerability in zyxel vmg5313-b30b_firmware. EPSS estimates a 2.18% chance of exploitation in the next 30 days, higher than 82.1% of scored vulnerabilities. 2 public exploits are recorded.

Overall risk
90/100
0100
Critical · default modelHow is this calculated?
CVSS score
10.0/10
010
High · v2.0 (NVD)
EPSS score
2.18%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits2reference

Timeline

  1. 02-09-2020
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

Zyxel VMG5313-B30B router on firmware 5.13(ABCJ.6)b3_1127, and possibly older versions of firmware are affected by insecure permissions which allows regular and other users to create new users with elevated privileges. This is done by changing "FirstIndex" field in JSON that is POST-ed during account creation. Similar may also be possible with account deletion.

CVSS metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

2.18%

Chance of exploitation in the next 30 days

Percentile

82%

Versus all other CVEs

30-day change

No change 0.00 pp

From 2.18% on 22-09-2026

22-09-202622-10-2026

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

2 found
  • referenceUnverified

    Exploit Reference (blog.somegeneric.ninja)

    Maturity: unknown

  • referenceUnverified

    Exploit Reference (blog.somegeneric.ninja)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Zyxel1 product

1 vendor · 1 product

References

3 links