7.5

CVE-2021-30130: debian debian_linux

CVSS: 7.5v3.1HighModified
AliasesUBUNTU-CVE-2021-30130DEBIAN-CVE-2021-30130DLA-3197-1
Published 06-04-2021Last modified 03-08-2024
Open JSON

Vulnerability summary

CVE-2021-30130 is a high (CVSS 7.5) vulnerability in debian debian_linux. EPSS estimates a 1.05% chance of exploitation in the next 30 days, higher than 64% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
1.05%
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-7404-1

Timeline

  1. 06-04-2021
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

phpseclib before 2.0.31 and 3.x before 3.0.7 mishandles RSA PKCS#1 v1.5 signature verification.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

1.05%

Chance of exploitation in the next 30 days

Percentile

64%

Versus all other CVEs

30-day change

0.00 pp

From 1.05% on 21-09-2026

21-09-202621-10-2026
EPSS score
1.05%

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

Debian4 products
  • php-phpseclib< 2.0.30-2~deb10u1 | < 2.0.30-2
  • php-phpseclib3< 3.0.7-1
  • phpseclib< 1.0.19-3~deb10u1 | < 1.0.19-3
  • debian_linuxEOL10.0
Ubuntu2 products
  • php-phpseclib< 2.0.23-2ubuntu0.1~esm2
  • phpseclib< 1.0.18-2ubuntu0.1~esm1
Phpseclib1 product

3 vendors · 7 products

References

9 links