CVE-2008-5679

CVE-2008-5679 is a critical-severity vulnerability in Opera with a CVSS 2.0 base score of 9.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-399.

Key facts

• Severity: Critical (CVSS 2.0 base score 9.3)
• EPSS exploit prediction: 3% (87th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-399
• Affected product: Opera
• Published: 2008-12-19
• Last modified: 2026-06-16

Description

The HTML parsing engine in Opera before 9.63 allows remote attackers to execute arbitrary code via crafted web pages that trigger an invalid pointer calculation and heap corruption.

Frequently asked questions

What is CVE-2008-5679?

The HTML parsing engine in Opera before 9.63 allows remote attackers to execute arbitrary code via crafted web pages that trigger an invalid pointer calculation and heap corruption.

How severe is CVE-2008-5679?

CVE-2008-5679 has a CVSS 2.0 base score of 9.3, rated critical severity.

Is CVE-2008-5679 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2008-5679?

CVE-2008-5679 primarily affects Opera. In total, 96 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2008-5679?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2008-5679 published?

CVE-2008-5679 was published on 2008-12-19 and last updated on 2026-06-16.

References

• http://secunia.com/advisories/34294
• http://security.gentoo.org/glsa/glsa-200903-30.xml
• http://securityreason.com/securityalert/4791
• http://www.nruns.com/security_advisory_opera_html_parsing_code_execution.php
• http://www.opera.com/docs/changelogs/linux/963/
• http://www.opera.com/support/kb/view/921/
• http://www.securityfocus.com/archive/1/499315/100/0/threaded
• http://www.securitytracker.com/id?1021460

Affected products (96)

• cpe:2.3:a:opera:opera:*:*:*:*:*:*:*:*
• cpe:2.3:a:opera:opera:5..10:*:*:*:*:*:*:*
• cpe:2.3:a:opera:opera:5.0:*:*:*:*:*:*:*
• cpe:2.3:a:opera:opera:5.0:beta_2:*:*:*:*:*:*
• cpe:2.3:a:opera:opera:5.0:beta_3:*:*:*:*:*:*
• cpe:2.3:a:opera:opera:5.0:beta_4:*:*:*:*:*:*
• cpe:2.3:a:opera:opera:5.0:beta_5:*:*:*:*:*:*
• cpe:2.3:a:opera:opera:5.0:beta_6:*:*:*:*:*:*
• cpe:2.3:a:opera:opera:5.0:beta_7:*:*:*:*:*:*
• cpe:2.3:a:opera:opera:5.0:beta_8:*:*:*:*:*:*
• cpe:2.3:a:opera:opera:5.1:*:*:*:*:*:*:*
• cpe:2.3:a:opera:opera:5.02:*:*:*:*:*:*:*
• cpe:2.3:a:opera:opera:5.2:*:*:*:*:*:*:*
• cpe:2.3:a:opera:opera:5.3:*:*:*:*:*:*:*
• cpe:2.3:a:opera:opera:5.4:*:*:*:*:*:*:*
• cpe:2.3:a:opera:opera:5.5:*:*:*:*:*:*:*
• cpe:2.3:a:opera:opera:5.6:*:*:*:*:*:*:*
• cpe:2.3:a:opera:opera:5.7:*:*:*:*:*:*:*
• cpe:2.3:a:opera:opera:5.8:*:*:*:*:*:*:*
• cpe:2.3:a:opera:opera:5.9:*:*:*:*:*:*:*
• cpe:2.3:a:opera:opera:5.10:*:*:*:*:*:*:*
• cpe:2.3:a:opera:opera:5.11:*:*:*:*:*:*:*
• cpe:2.3:a:opera:opera:5.12:*:*:*:*:*:*:*
• cpe:2.3:a:opera:opera:6:beta_1:*:*:*:*:*:*
• cpe:2.3:a:opera:opera:6.0:*:*:*:*:*:*:*
• cpe:2.3:a:opera:opera:6.0:beta_1:*:*:*:*:*:*
• cpe:2.3:a:opera:opera:6.0:beta_2:*:*:*:*:*:*
• cpe:2.3:a:opera:opera:6.0:beta_3:*:*:*:*:*:*
• cpe:2.3:a:opera:opera:6.1:*:*:*:*:*:*:*
• cpe:2.3:a:opera:opera:6.01:*:*:*:*:*:*:*
• cpe:2.3:a:opera:opera:6.02:*:*:*:*:*:*:*
• cpe:2.3:a:opera:opera:6.03:*:*:*:*:*:*:*
• cpe:2.3:a:opera:opera:6.04:*:*:*:*:*:*:*
• cpe:2.3:a:opera:opera:6.05:*:*:*:*:*:*:*
• cpe:2.3:a:opera:opera:6.06:*:*:*:*:*:*:*
• cpe:2.3:a:opera:opera:6.11:*:*:*:*:*:*:*
• cpe:2.3:a:opera:opera:6.12:*:*:*:*:*:*:*
• cpe:2.3:a:opera:opera:7:beta_1:*:*:*:*:*:*
• cpe:2.3:a:opera:opera:7:beta_1.2:*:*:*:*:*:*
• cpe:2.3:a:opera:opera:7.0:*:*:*:*:*:*:*

More vulnerabilities in Opera

• CVE-2008-4293 — Critical (CVSS 10.0): Unspecified vulnerability in Opera before 9.52 on Windows, when registered as a protocol handler, allows remote…
• CVE-2008-3079 — Critical (CVSS 10.0): Unspecified vulnerability in Opera before 9.51 on Windows allows attackers to execute arbitrary code via unknown…
• CVE-2008-5178 — Critical (CVSS 9.3): Heap-based buffer overflow in Opera 9.62 on Windows allows remote attackers to execute arbitrary code via a long…
• CVE-2008-4794 — Critical (CVSS 9.3): Opera before 9.62 allows remote attackers to execute arbitrary commands via the History Search results page, a…
• CVE-2008-4695 — Critical (CVSS 9.3): Opera before 9.60 allows remote attackers to obtain sensitive information and have unspecified other impact by…
• CVE-2008-1764 — Critical (CVSS 9.3): Unspecified vulnerability in Opera before 9.27 has unknown impact and attack vectors related to "keyboard handling of…

All CVEs affecting Opera →

Other CWE-399 (Resource Management Errors) vulnerabilities

• CVE-2015-8104 — Critical (CVSS 10.0): The KVM subsystem in the Linux kernel through 4.2.6, and Xen 4.3.x through 4.6.x, allows guest OS users to cause a…
• CVE-2015-0339 — Critical (CVSS 10.0): Adobe Flash Player before 13.0.0.277 and 14.x through 17.x before 17.0.0.134 on Windows and OS X and before…
• CVE-2015-0335 — Critical (CVSS 10.0): Adobe Flash Player before 13.0.0.277 and 14.x through 17.x before 17.0.0.134 on Windows and OS X and before…
• CVE-2015-0333 — Critical (CVSS 10.0): Adobe Flash Player before 13.0.0.277 and 14.x through 17.x before 17.0.0.134 on Windows and OS X and before…
• CVE-2014-4121 — Critical (CVSS 10.0): Microsoft .NET Framework 2.0 SP2, 3.5, 3.5.1, 4, 4.5, 4.5.1, and 4.5.2 does not properly parse internationalized…
• CVE-2014-0560 — Critical (CVSS 10.0): Use-after-free vulnerability in Adobe Reader and Acrobat 10.x before 10.1.12 and 11.x before 11.0.09 on Windows and OS…

Browse all CWE-399 (Resource Management Errors) vulnerabilities →