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CVE-2015-5965: fortinet fortios Improper Input Validation

CVSS: 5.0v2.0MediumModified
Published 11-08-2015Last modified 06-08-2024
Open JSON

Vulnerability summary

CVE-2015-5965 is a medium (CVSS 5.0) Improper Input Validation vulnerability in fortinet fortios. EPSS estimates a 2.09% chance of exploitation in the next 30 days, higher than 81.4% of scored vulnerabilities.

Overall risk
20/100
0100
Low · default modelHow is this calculated?
CVSS score
5.0/10
010
Medium · v2.0 (NVD)
EPSS score
2.09%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 11-08-2015
    PublishedVulnerability first disclosed.
  2. 06-08-2024
    Last modifiedVulnerability information updated.

Description

The SSL-VPN feature in Fortinet FortiOS before 4.3.13 only checks the first byte of the TLS MAC in finished messages, which makes it easier for remote attackers to spoof encrypted content via a crafted MAC field.

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

2.09%

Chance of exploitation in the next 30 days

Percentile

81%

Versus all other CVEs

30-day change

0.00 pp

From 2.09% on 21-09-2026

21-09-202621-10-2026
EPSS score
2.09%

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

Fortinet1 product

1 vendor · 1 product

References

5 links