CVE-2008-5077

CVE-2008-5077 is a medium-severity vulnerability in Openssl with a CVSS 2.0 base score of 5.8. 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-20.

Key facts

• Severity: Medium (CVSS 2.0 base score 5.8)
• EPSS exploit prediction: 5% (91st percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-20
• Affected product: Openssl
• Published: 2009-01-07
• Last modified: 2026-06-16

Description

OpenSSL 0.9.8i and earlier does not properly check the return value from the EVP_VerifyFinal function, which allows remote attackers to bypass validation of the certificate chain via a malformed SSL/TLS signature for DSA and ECDSA keys.

Frequently asked questions

What is CVE-2008-5077?

OpenSSL 0.9.8i and earlier does not properly check the return value from the EVP_VerifyFinal function, which allows remote attackers to bypass validation of the certificate chain via a malformed SSL/TLS signature for DSA and ECDSA keys.

How severe is CVE-2008-5077?

CVE-2008-5077 has a CVSS 2.0 base score of 5.8, rated medium severity.

Is CVE-2008-5077 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2008-5077?

CVE-2008-5077 primarily affects Openssl. In total, 59 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2008-5077?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2008-5077 published?

CVE-2008-5077 was published on 2009-01-07 and last updated on 2026-06-16.

References

• http://lists.apple.com/archives/security-announce/2009/May/msg00002.html
• http://lists.opensuse.org/opensuse-security-announce/2011-07/msg00013.html
• http://lists.opensuse.org/opensuse-security-announce/2011-07/msg00014.html
• http://marc.info/?l=bugtraq&m=123859864430555&w=2
• http://marc.info/?l=bugtraq&m=124277349419254&w=2
• http://marc.info/?l=bugtraq&m=127678688104458&w=2
• http://secunia.com/advisories/33338
• http://secunia.com/advisories/33394
• http://secunia.com/advisories/33436
• http://secunia.com/advisories/33557
• http://secunia.com/advisories/33673
• http://secunia.com/advisories/33765
• http://secunia.com/advisories/34211
• http://secunia.com/advisories/35074
• http://secunia.com/advisories/35108
• http://secunia.com/advisories/39005
• http://security.gentoo.org/glsa/glsa-200902-02.xml
• http://slackware.com/security/viewer.php?l=slackware-security&y=2009&m=slackware-security.544796
• http://sunsolve.sun.com/search/document.do?assetkey=1-66-250826-1
• http://support.apple.com/kb/HT3549
• http://support.avaya.com/elmodocs2/security/ASA-2009-038.htm
• http://support.nortel.com/go/main.jsp?cscat=BLTNDETAIL&id=837653
• http://voodoo-circle.sourceforge.net/sa/sa-20090123-01.html
• http://www.ocert.org/advisories/ocert-2008-016.html
• http://www.openssl.org/news/secadv_20090107.txt
• http://www.redhat.com/support/errata/RHSA-2009-0004.html
• http://www.securityfocus.com/archive/1/499827/100/0/threaded
• http://www.securityfocus.com/archive/1/502322/100/0/threaded
• http://www.securityfocus.com/bid/33150
• http://www.securitytracker.com/id?1021523

Affected products (59)

• cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*
• cpe:2.3:a:openssl:openssl:0.9.1c:*:*:*:*:*:*:*
• cpe:2.3:a:openssl:openssl:0.9.2b:*:*:*:*:*:*:*
• cpe:2.3:a:openssl:openssl:0.9.3:*:*:*:*:*:*:*
• cpe:2.3:a:openssl:openssl:0.9.3a:*:*:*:*:*:*:*
• cpe:2.3:a:openssl:openssl:0.9.4:*:*:*:*:*:*:*
• cpe:2.3:a:openssl:openssl:0.9.5:*:*:*:*:*:*:*
• cpe:2.3:a:openssl:openssl:0.9.5:beta1:*:*:*:*:*:*
• cpe:2.3:a:openssl:openssl:0.9.5:beta2:*:*:*:*:*:*
• cpe:2.3:a:openssl:openssl:0.9.5a:*:*:*:*:*:*:*
• cpe:2.3:a:openssl:openssl:0.9.5a:beta1:*:*:*:*:*:*
• cpe:2.3:a:openssl:openssl:0.9.5a:beta2:*:*:*:*:*:*
• cpe:2.3:a:openssl:openssl:0.9.6:*:*:*:*:*:*:*
• cpe:2.3:a:openssl:openssl:0.9.6:beta1:*:*:*:*:*:*
• cpe:2.3:a:openssl:openssl:0.9.6:beta2:*:*:*:*:*:*
• cpe:2.3:a:openssl:openssl:0.9.6:beta3:*:*:*:*:*:*
• cpe:2.3:a:openssl:openssl:0.9.6a:*:*:*:*:*:*:*
• cpe:2.3:a:openssl:openssl:0.9.6a:beta1:*:*:*:*:*:*
• cpe:2.3:a:openssl:openssl:0.9.6a:beta2:*:*:*:*:*:*
• cpe:2.3:a:openssl:openssl:0.9.6a:beta3:*:*:*:*:*:*
• cpe:2.3:a:openssl:openssl:0.9.6b:*:*:*:*:*:*:*
• cpe:2.3:a:openssl:openssl:0.9.6c:*:*:*:*:*:*:*
• cpe:2.3:a:openssl:openssl:0.9.6d:*:*:*:*:*:*:*
• cpe:2.3:a:openssl:openssl:0.9.6e:*:*:*:*:*:*:*
• cpe:2.3:a:openssl:openssl:0.9.6f:*:*:*:*:*:*:*
• cpe:2.3:a:openssl:openssl:0.9.6g:*:*:*:*:*:*:*
• cpe:2.3:a:openssl:openssl:0.9.6h:*:*:*:*:*:*:*
• cpe:2.3:a:openssl:openssl:0.9.6i:*:*:*:*:*:*:*
• cpe:2.3:a:openssl:openssl:0.9.6j:*:*:*:*:*:*:*
• cpe:2.3:a:openssl:openssl:0.9.6k:*:*:*:*:*:*:*
• cpe:2.3:a:openssl:openssl:0.9.6l:*:*:*:*:*:*:*
• cpe:2.3:a:openssl:openssl:0.9.6m:*:*:*:*:*:*:*
• cpe:2.3:a:openssl:openssl:0.9.7:*:*:*:*:*:*:*
• cpe:2.3:a:openssl:openssl:0.9.7:beta1:*:*:*:*:*:*
• cpe:2.3:a:openssl:openssl:0.9.7:beta2:*:*:*:*:*:*
• cpe:2.3:a:openssl:openssl:0.9.7:beta3:*:*:*:*:*:*
• cpe:2.3:a:openssl:openssl:0.9.7:beta4:*:*:*:*:*:*
• cpe:2.3:a:openssl:openssl:0.9.7:beta5:*:*:*:*:*:*
• cpe:2.3:a:openssl:openssl:0.9.7:beta6:*:*:*:*:*:*
• cpe:2.3:a:openssl:openssl:0.9.7a:*:*:*:*:*:*:*

More vulnerabilities in Openssl

• CVE-2009-3245 — Critical (CVSS 10.0): OpenSSL before 0.9.8m does not check for a NULL return value from bn_wexpand function calls in (1) crypto/bn/bn_div.c,…
• CVE-2006-3738 — Critical (CVSS 10.0): Buffer overflow in the SSL_get_shared_ciphers function in OpenSSL 0.9.7 before 0.9.7l, 0.9.8 before 0.9.8d, and earlier…
• CVE-2026-31789 — Critical (CVSS 9.8): Issue summary: Converting an excessively large OCTET STRING value to a hexadecimal string leads to a heap buffer…
• CVE-2022-2274 — Critical (CVSS 9.8): The OpenSSL 3.0.4 release introduced a serious bug in the RSA implementation for X86_64 CPUs supporting the AVX512IFMA…
• CVE-2021-3711 — Critical (CVSS 9.8): In order to decrypt SM2 encrypted data an application is expected to call the API function EVP_PKEY_decrypt().…
• CVE-2016-6309 — Critical (CVSS 9.8): statem/statem.c in OpenSSL 1.1.0a does not consider memory-block movement after a realloc call, which allows remote…

All CVEs affecting Openssl →

Other CWE-20 (Improper Input Validation) vulnerabilities

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• CVE-2026-48277 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
• CVE-2026-48055 — Critical (CVSS 10.0): Streambert is a cross-platform Electron Desktop App to stream and download any video media. In versions 2.4.0 and…
• CVE-2026-34910 — Critical (CVSS 10.0): A malicious actor with access to the network could exploit an Improper Input Validation vulnerability found in UniFi OS…
• CVE-2026-33587 — Critical (CVSS 10.0): Lack of user input sanitisation in Open Notebook v1.8.3 allows the application user to execute Python code (and…

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Threat intelligence

Threat-intel indicators referencing this CVE:

• 222.99.52.202 (ipv4-addr)
• 90.160.135.217 (ipv4-addr)
• 62.36.19.42 (ipv4-addr)
• 62.36.19.41 (ipv4-addr)
• 171.100.156.38 (ipv4-addr)