CVE-2015-8960

Exp

The TLS protocol 1.2 and earlier supports the rsa_fixed_dh, dss_fixed_dh, rsa_fixed_ecdh, and ecdsa_fixed_ecdh values for ClientCertificateType but does not directly document the ability to compute the master secret in certain situations with a client secret key and server public key but not a server secret key, which makes it easier for man-in-the-middle attackers to spoof TLS servers by leveraging knowledge of the secret key for an arbitrary installed client X.509 certificate, aka the "Key Compromise Impersonation (KCI)" issue.

Published: 2016-09-21 Last update: 2026-05-06 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2015-8960 is rated High Exploit Risk (76.1/100): CVSS High severity, with medium exploitation likelihood (EPSS 1.95%). 2 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +1.62% over the last day, indicating growing attacker interest. Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2015-8960

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2015-8960

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.33% 1.95% +1.62%
2 2026-01-31 0.36% 0.33% -0.04%
3 2025-03-30 — 0.36% —

Full EPSS history (10 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2015-8960

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.1 3.1 HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.2 5.9 [email protected]
6.8 2.0 MEDIUM
AV:N/AC:M/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.6 6.4 [email protected]

Weakness enumeration for CVE-2015-8960

OS Trackers for CVE-2015-8960

vendor priority summary link
alpine high CVE-2015-8960: 1 source package rows (firefox); 186 state rows across 7 repos (3.17-community, 3.18-community, 3.19-community, 3.20-community, 3.22-community, 3.23-community, edge-community); fixed 0, open 186. https://security.alpinelinux.org/vuln/CVE-2015-8960
suse medium CVE-2015-8960 severity moderate: SUSE including 12 source package names (libopenssl-devel, libopenssl0_9_8, …), 50 product×package rows across 12 product lines (SUSE Linux Enterprise Desktop 11 SP3, SUSE Linux Enterprise Desktop 11 SP4, … (12 product lines)): Known Not Affected 50. https://www.suse.com/security/cve/CVE-2015-8960/

Affected software / configurations for CVE-2015-8960

Vendor Product Version Raw CPE
ietf transport_layer_security <= 1.2 cpe:2.3:a:ietf:transport_layer_security:*:*:*:*:*:*:*:*
netapp clustered_data_ontap_antivirus_connector — cpe:2.3:a:netapp:clustered_data_ontap_antivirus_connector:-:*:*:*:*:*:*:*
netapp data_ontap_edge — cpe:2.3:a:netapp:data_ontap_edge:-:*:*:*:*:*:*:*
netapp host_agent — cpe:2.3:a:netapp:host_agent:-:*:*:*:*:*:*:*
netapp oncommand_shift — cpe:2.3:a:netapp:oncommand_shift:-:*:*:*:*:*:*:*
netapp plug-in_for_symantec_netbackup — cpe:2.3:a:netapp:plug-in_for_symantec_netbackup:-:*:*:*:*:*:*:*
netapp smi-s_provider — cpe:2.3:a:netapp:smi-s_provider:-:*:*:*:*:*:*:*
netapp snap_creator_framework — cpe:2.3:a:netapp:snap_creator_framework:-:*:*:*:*:*:*:*
netapp snapdrive — cpe:2.3:a:netapp:snapdrive:-:*:*:*:*:unix:*:*
netapp snapdrive — cpe:2.3:a:netapp:snapdrive:-:*:*:*:*:windows:*:*
netapp snapmanager — cpe:2.3:a:netapp:snapmanager:-:*:*:*:*:oracle:*:*
netapp snapmanager — cpe:2.3:a:netapp:snapmanager:-:*:*:*:*:sap:*:*
netapp snapprotect — cpe:2.3:a:netapp:snapprotect:-:*:*:*:*:*:*:*
netapp solidfire_\&_hci_management_node — cpe:2.3:a:netapp:solidfire_\&_hci_management_node:-:*:*:*:*:*:*:*
netapp system_setup — cpe:2.3:a:netapp:system_setup:-:*:*:*:*:*:*:*

References for CVE-2015-8960

URL Tags
http://twitter.com/matthew_d_green/statuses/630908726950674433 Press/Media Coverage Technical Description Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/09/20/4 Mailing List Technical Description Third Party Advisory
http://www.securityfocus.com/bid/93071 Broken Link Third Party Advisory VDB Entry
https://kcitls.org Exploit Technical Description
https://security.netapp.com/advisory/ntap-20180626-0002/ Third Party Advisory
https://www.usenix.org/system/files/conference/woot15/woot15-paper-hlauschek.pdf Exploit Mitigation Technical Description
cvelogic Threat Intelligence