lynx: Does not verify that the server's certificate is signed by a trusted certification authority
Published Nov 4, 2012
5.9
MEDIUMCVSS 3.1
EPSS 0.81%
Description
Lynx does not verify that the server's certificate is signed by a trusted certification authority, which allows man-in-the-middle attackers to spoof SSL servers via a crafted certificate, related to improper use of a certain GnuTLS function.
Affected products
No data.
Configuration 2
- 10.04
- 11.10
- 12.04
- 12.10
No data.
Red Hat Enterprise Linux 5
lynx
Not affected
Red Hat Enterprise Linux 6
lynx
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | lynx | Not affected | n/a |
| Red Hat Enterprise Linux 6 | lynx | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
Not vulnerable. This issue did not affect the versions of lynx as shipped with Red Hat Enterprise Linux 5 and 6 as they were not build against GnuTLS.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
No CVSS v3.0 score for this CVE.
AV:N/AC:M/Au:N/C:P/I:P/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.81% (0.00811) | 55.38th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.81% (0.00811) | 51.99th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.57% (0.00572) | 66.75th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.22% (0.00225) | 61.68th | v3 (v2023.03.01) |
| Feb 9, 2024 | 0.22% (0.00225) | 59.86th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.08% (0.00083) | 33.52th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.02% (0.01018) | 40.69th | v2 (v2022.01.01) |
| Sep 10, 2022 | 1.02% (0.01018) | 38.88th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.02% (0.01018) | 36.86th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.02% (0.01018) | 19.50th | v2 (v2022.01.01) |
References (9)
- http://www.cs.utexas.edu/~shmat/shmat_ccs12.pdf x_refsource_MISCExploit
- http://www.mandriva.com/security/advisories?name=MDVSA-2013:101 vendor-advisoryx_refsource_MANDRIVABroken Link
- http://www.ubuntu.com/usn/USN-1642-1 vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2012-5821 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=873262 Issue Tracking
- https://exchange.xforce.ibmcloud.com/vulnerabilities/79930 vdb-entryx_refsource_XFThird Party AdvisoryVDB Entry
- https://nvd.nist.gov/vuln/detail/CVE-2012-5821
- https://wiki.mageia.org/en/Support/Advisories/MGASA-2012-0351 x_refsource_CONFIRMThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2012-5821
| Link | Providers | Tags |
|---|---|---|
| http://www.cs.utexas.edu/~shmat/shmat_ccs12.pdf | x_refsource_MISCExploit | |
| http://www.mandriva.com/security/advisories?name=MDVSA-2013:101 | vendor-advisoryx_refsource_MANDRIVABroken Link | |
| http://www.ubuntu.com/usn/USN-1642-1 | vendor-advisoryx_refsource_UBUNTUThird Party Advisory | |
| https://access.redhat.com/security/cve/CVE-2012-5821 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=873262 | Issue Tracking | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/79930 | vdb-entryx_refsource_XFThird Party AdvisoryVDB Entry | |
| https://nvd.nist.gov/vuln/detail/CVE-2012-5821 | ||
| https://wiki.mageia.org/en/Support/Advisories/MGASA-2012-0351 | x_refsource_CONFIRMThird Party Advisory | |
| https://www.cve.org/CVERecord?id=CVE-2012-5821 |
Change history (0)
No recorded changes yet.