How severe is CVE-2008-5539?

CVE-2008-5539 has a CVSS 2.0 base score of 9.3, rated critical severity.

Is CVE-2008-5539 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 10% (95th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2008-5539?

CVE-2008-5539 primarily affects Rising-global Rising Antivirus. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2008-5539?

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-2008-5539 published?

CVE-2008-5539 was published on 2008-12-12 and last updated on 2026-06-16.

CVE-2008-5539

CVE-2008-5539 is a critical-severity vulnerability in Rising-global Rising Antivirus with a CVSS 2.0 base score of 9.3. Its EPSS exploit-prediction score of 10% places it in the 95th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-20.

Key facts

Severity: Critical (CVSS 2.0 base score 9.3)
EPSS exploit prediction: 10% (95th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Rising-global Rising Antivirus
Published: 2008-12-12
Last modified: 2026-06-16

Description

RISING Antivirus 21.06.31.00 and possibly 20.61.42.00, when Internet Explorer 6 or 7 is used, allows remote attackers to bypass detection of malware in an HTML document by placing an MZ header (aka "EXE info") at the beginning, and modifying the filename to have (1) no extension, (2) a .txt extension, or (3) a .jpg extension, as demonstrated by a document containing a CVE-2006-5745 exploit.

Frequently asked questions

What is CVE-2008-5539?: RISING Antivirus 21.06.31.00 and possibly 20.61.42.00, when Internet Explorer 6 or 7 is used, allows remote attackers to bypass detection of malware in an HTML document by placing an MZ header (aka "EXE info") at the beginning, and modifying the filename to have (1) no extension, (2) a .txt extension, or (3) a .jpg extension, as demonstrated by a document containing a CVE-2006-5745 exploit.
How severe is CVE-2008-5539?: CVE-2008-5539 has a CVSS 2.0 base score of 9.3, rated critical severity.
Is CVE-2008-5539 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 10% (95th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2008-5539?: CVE-2008-5539 primarily affects Rising-global Rising Antivirus. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2008-5539?: 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-2008-5539 published?: CVE-2008-5539 was published on 2008-12-12 and last updated on 2026-06-16.

References

Affected products (2)

cpe:2.3:a:rising-global:rising_antivirus:20.61.42.00:*:*:*:*:*:*:*
cpe:2.3:a:rising-global:rising_antivirus:21.06.31.00:*:*:*:*:*:*:*

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