7.8

CVE-2018-25018: rarlab unrar Out-of-bounds Write

CVSS: 7.8v3.1HighModified
AliasesUBUNTU-CVE-2018-25018DEBIAN-CVE-2018-25018
Published 01-07-2021Last modified 05-08-2024
Open JSON

Vulnerability summary

CVE-2018-25018 is a high (CVSS 7.8) Out-of-bounds Write vulnerability in rarlab unrar. EPSS estimates a 1.31% chance of exploitation in the next 30 days, higher than 70.1% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
41/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v3.1 (NVD)
EPSS score
1.31%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Timeline

  1. 01-07-2021
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

Description

UnRAR 5.6.1.7 through 5.7.4 and 6.0.3 has an out-of-bounds write during a memcpy in QuickOpen::ReadRaw when called from QuickOpen::ReadNext.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

1.31%

Chance of exploitation in the next 30 days

Percentile

70%

Versus all other CVEs

30-day change

0.00 pp

From 1.31% on 19-09-2026

19-09-202619-10-2026
EPSS score
1.31%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (bugs.chromium.org)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Debian1 product
  • unrar-nonfree< 1:5.6.6-1
Rarlab1 product
  • unrar≥ 5.6.1.7, ≤ 5.7.4 | 6.0.3
Ubuntu1 product
  • unrar-nonfreeAll versions (No fix recorded)

3 vendors · 3 products

References

6 links