4.3

CVE-2009-2700: qt Improper Input Validation

CVSS: 4.3v2.0MediumModified
Published 02-09-2009Last modified 07-08-2024
Open JSON

Vulnerability summary

CVE-2009-2700 is a medium (CVSS 4.3) Improper Input Validation vulnerability in qt. EPSS estimates a 0.94% chance of exploitation in the next 30 days, higher than 60.2% of scored vulnerabilities.

Overall risk
17/100
0100
Low · default modelHow is this calculated?
CVSS score
4.3/10
010
Medium · v2.0 (NVD)
EPSS score
0.94%
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
DSA-1988-1

Timeline

  1. 02-09-2009
    PublishedVulnerability first disclosed.
  2. 07-08-2024
    Last modifiedVulnerability information updated.

Description

src/network/ssl/qsslcertificate.cpp in Nokia Trolltech Qt 4.x does not properly handle a '\0' character in a domain name in the Subject Alternative Name field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

0.94%

Chance of exploitation in the next 30 days

Percentile

60%

Versus all other CVEs

30-day change

0.00 pp

From 0.94% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.94%

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

Debian1 product
  • qt4-x11< 4:4.5.3-1
Qt1 product
  • qtEOL4.0.0 | 4.0.1 | 4.1.0 | 4.1.1 | 4.1.2 | 4.1.3 | 4.1.4 | 4.1.5 | 4.2.0 | 4.2.1 | 4.2.3 | 4.3.0 | 4.3.1 | 4.3.2 | 4.3.3 | 4.3.4 | 4.3.5 | 4.4.0 | 4.4.1 | 4.4.2 | 4.4.3 | 4.5.0 | 4.5.1 | 4.5.2 | 4.5.3 | 4.6.0 | 4.6.0:rc1 | 4.6.1 | 4.6.2 | 4.6.3 | 4.6.4 | 4.7.0 | 4.7.1 | 4.7.2 | 4.7.3 | 4.7.4 | 4.7.5 | 4.8.0 | 4.8.1 | 4.8.2 | 4.8.3 | 4.8.4

2 vendors · 2 products

References

7 links