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CVE-2008-4293: Unspecified vulnerability in Opera before 9.52 on Windows, when registered as a protocol handler, allows remot

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HIGH 10.0UPGRADE

CVE-2008-4293 is a high-severity flaw (CVSS 10.0) affecting opera. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Unspecified vulnerability in Opera before 9.52 on Windows, when registered as a protocol handler, allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via unknown vectors in which Opera is launched by other applications.

Why this priority

  • Critical severity
  • EPSS top 8%: very likely to be exploited

A fixed release or distro patch exists.

Risk facts

CVSS score10.0 (High)
EPSS exploit chance4.5% (top 8%)
CISA exploited listNo
Published2008-09-27
Last modified2026-06-16
Publisher (CNA): MITRE · Vendor: opera

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Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

opera opera UPGRADE
Affected: <= 9.51 · 5..10 · 5.0 · 5.1 · 5.2 · 5.3 · 5.4 · 5.5
Fixed in: newer than 9.51
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy opera || rpm -q opera || opera --version
2. UPGRADE to newer than 9.51 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade opera
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade opera
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2008-4293?

opera: upgrade to newer than 9.51. Exact commands for each OS are on this page.

Is CVE-2008-4293 being exploited?

CVE-2008-4293 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2008-4293 affect?

CVE-2008-4293 affects opera. Severity is high (CVSS 10.0). Unspecified vulnerability in Opera before 9.52 on Windows, when registered as a protocol handler, allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via unknown vectors in which Opera is launche

How urgent is CVE-2008-4293?

Priority 58/100. Critical severity; EPSS top 8%: very likely to be exploited

Software pages

Windows vulnerabilities

Related CVEs

References

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