GHSA-83mx-573x-5rw9 · Severity: medium · Ecosystem: rust — openssl-src NULL pointer Dereference in signature_algorithms processing
An OpenSSL TLS server may crash if sent a maliciously crafted renegotiation ClientHello message from a client. If a TLSv1.2 renegotiation ClientHello omits the signature_algorithms extension (where it was present in the initial ClientHello), but includes a signature_algorithms_cert extension then a NULL pointer dereference will result, leading to a crash and a denial of service attack. A server is only vulnerable if it has TLSv1.2 and renegotiation enabled (which is the default configuration). OpenSSL TLS clients are not impacted by this issue. All OpenSSL 1.1.1 versions are affected by this issue. Users of these versions should upgrade to OpenSSL 1.1.1k. OpenSSL 1.0.2 is not impacted by this issue. Fixed in OpenSSL 1.1.1k (Affected 1.1.1-1.1.1j).
Conclusion & alert: CVE-2021-3449 is rated Moderate Risk (57.6/100): CVSS Medium severity, with high exploitation likelihood (EPSS 9.86%, 93th percentile). Core evidence: EPSS ranks this CVE among the most likely to be exploited in the near term. EPSS rose +1.50% over the last day, indicating growing attacker interest. Mandatory action: High exploitation likelihood—assess exposure and prioritize remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
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 | 2026-04-11 | 8.36% | 9.86% | +1.50% |
| 2 | 2026-03-08 | 9.58% | 8.36% | -1.21% |
| 3 | 2026-03-04 | — | 9.58% | — |
Full EPSS history (81 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 5.9 | 3.1 | MEDIUM |
|
2.2 | 3.6 | [email protected] |
| 4.3 | 2.0 | MEDIUM |
|
8.6 | 2.9 | [email protected] |
GHSA-83mx-573x-5rw9 · Severity: medium · Ecosystem: rust — openssl-src NULL pointer Dereference in signature_algorithms processing
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
medium | CVE-2021-3449: 4 source package rows (openssl, openssl1.1-compat, openssl3, synapse); 57 state rows across 17 repos (3.10-main, 3.11-main, 3.12-main, 3.17-community, 3.17-main, 3.18-community, 3.18-main, 3.19-community, 3.19-main, 3.20-community, 3.20-main, 3.21-community, 3.21-main, 3.22-community, 3.22-main, edge-community, edge-main); fixed 22, open 35. | https://security.alpinelinux.org/vuln/CVE-2021-3449 |
debian
|
not yet assigned | CVE-2021-3449 not yet assigned priority: Debian including 1 source packages (openssl), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2021-3449 |
gentoo
|
normal | CVE-2021-3449: 1 GLSA(s) (202103-03), 1 atom(s) (dev-libs/openssl); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2021-3449 |
redhat
|
high | — | https://access.redhat.com/security/cve/CVE-2021-3449 |
suse
|
high | CVE-2021-3449 severity important: SUSE including 524 source package names (0.21.0.3.2.10:libopenssl1_1-1.1.1d-11.20.1, 0.21.0.3.2.10:libopenssl1_1-hmac-1.1.1d-11.20.1, …), 1062 product×package rows across 201 product lines (Container bci/bci-init, Container bci/dotnet-aspnet, … (201 product lines)): Fixed 627, Known Not Affected 294, Known Affected 141. | https://www.suse.com/security/cve/CVE-2021-3449/ |
ubuntu
|
high | CVE-2021-3449 high priority: Ubuntu including 10 source packages (edk2, nodejs, …), 154 status rows across 16 suites (bionic, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): DNE 93, not-affected 34, released 17, needs-triage 5, ignored 4, deferred 1. | https://ubuntu.com/security/CVE-2021-3449 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| openssl | openssl | >= 1.1.1, < 1.1.1k | cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:* |
| debian | debian_linux | 9.0 | cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* |
| debian | debian_linux | 10.0 | cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* |
| freebsd | freebsd | 12.2 | cpe:2.3:o:freebsd:freebsd:12.2:-:*:*:*:*:*:* |
| freebsd | freebsd | 12.2 | cpe:2.3:o:freebsd:freebsd:12.2:p1:*:*:*:*:*:* |
| freebsd | freebsd | 12.2 | cpe:2.3:o:freebsd:freebsd:12.2:p2:*:*:*:*:*:* |
| netapp | active_iq_unified_manager | — | cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:* |
| netapp | cloud_volumes_ontap_mediator | — | cpe:2.3:a:netapp:cloud_volumes_ontap_mediator:-:*:*:*:*:*:*:* |
| netapp | e-series_performance_analyzer | — | cpe:2.3:a:netapp:e-series_performance_analyzer:-:*:*:*:*:*:*:* |
| netapp | oncommand_insight | — | cpe:2.3:a:netapp:oncommand_insight:-:*:*:*:*:*:*:* |
| netapp | oncommand_workflow_automation | — | cpe:2.3:a:netapp:oncommand_workflow_automation:-:*:*:*:*:*:*:* |
| netapp | ontap_select_deploy_administration_utility | — | cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:* |
| netapp | santricity_smi-s_provider | — | cpe:2.3:a:netapp:santricity_smi-s_provider:-:*:*:*:*:*:*:* |
| netapp | snapcenter | — | cpe:2.3:a:netapp:snapcenter:-:*:*:*:*:*:*:* |
| netapp | storagegrid | — | cpe:2.3:a:netapp:storagegrid:-:*:*:*:*:*:*:* |
| tenable | log_correlation_engine | < 6.0.9 | cpe:2.3:a:tenable:log_correlation_engine:*:*:*:*:*:*:*:* |
| tenable | nessus | <= 8.13.1 | cpe:2.3:a:tenable:nessus:*:*:*:*:*:*:*:* |
| tenable | nessus_network_monitor | 5.11.0 | cpe:2.3:a:tenable:nessus_network_monitor:5.11.0:*:*:*:*:*:*:* |
| tenable | nessus_network_monitor | 5.11.1 | cpe:2.3:a:tenable:nessus_network_monitor:5.11.1:*:*:*:*:*:*:* |
| tenable | nessus_network_monitor | 5.12.0 | cpe:2.3:a:tenable:nessus_network_monitor:5.12.0:*:*:*:*:*:*:* |
| tenable | nessus_network_monitor | 5.12.1 | cpe:2.3:a:tenable:nessus_network_monitor:5.12.1:*:*:*:*:*:*:* |
| tenable | nessus_network_monitor | 5.13.0 | cpe:2.3:a:tenable:nessus_network_monitor:5.13.0:*:*:*:*:*:*:* |
| tenable | tenable.sc | >= 5.13.0, <= 5.17.0 | cpe:2.3:a:tenable:tenable.sc:*:*:*:*:*:*:*:* |
| fedoraproject | fedora | 34 | cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* |
| mcafee | web_gateway | 8.2.19 | cpe:2.3:a:mcafee:web_gateway:8.2.19:*:*:*:*:*:*:* |
| mcafee | web_gateway | 9.2.10 | cpe:2.3:a:mcafee:web_gateway:9.2.10:*:*:*:*:*:*:* |
| mcafee | web_gateway | 10.1.1 | cpe:2.3:a:mcafee:web_gateway:10.1.1:*:*:*:*:*:*:* |
| mcafee | web_gateway_cloud_service | 8.2.19 | cpe:2.3:a:mcafee:web_gateway_cloud_service:8.2.19:*:*:*:*:*:*:* |
| mcafee | web_gateway_cloud_service | 9.2.10 | cpe:2.3:a:mcafee:web_gateway_cloud_service:9.2.10:*:*:*:*:*:*:* |
| mcafee | web_gateway_cloud_service | 10.1.1 | cpe:2.3:a:mcafee:web_gateway_cloud_service:10.1.1:*:*:*:*:*:*:* |
| checkpoint | quantum_security_management_firmware | r80.40 | cpe:2.3:o:checkpoint:quantum_security_management_firmware:r80.40:*:*:*:*:*:*:* |
| checkpoint | quantum_security_management_firmware | r81 | cpe:2.3:o:checkpoint:quantum_security_management_firmware:r81:*:*:*:*:*:*:* |
| checkpoint | multi-domain_management_firmware | r80.40 | cpe:2.3:o:checkpoint:multi-domain_management_firmware:r80.40:*:*:*:*:*:*:* |
| checkpoint | multi-domain_management_firmware | r81 | cpe:2.3:o:checkpoint:multi-domain_management_firmware:r81:*:*:*:*:*:*:* |
| checkpoint | quantum_security_gateway_firmware | r80.40 | cpe:2.3:o:checkpoint:quantum_security_gateway_firmware:r80.40:*:*:*:*:*:*:* |
| checkpoint | quantum_security_gateway_firmware | r81 | cpe:2.3:o:checkpoint:quantum_security_gateway_firmware:r81:*:*:*:*:*:*:* |
| oracle | communications_communications_policy_management | 12.6.0.0.0 | cpe:2.3:a:oracle:communications_communications_policy_management:12.6.0.0.0:*:*:*:*:*:*:* |
| oracle | enterprise_manager_for_storage_management | 13.4.0.0 | cpe:2.3:a:oracle:enterprise_manager_for_storage_management:13.4.0.0:*:*:*:*:*:*:* |
| oracle | essbase | 21.2 | cpe:2.3:a:oracle:essbase:21.2:*:*:*:*:*:*:* |
| oracle | graalvm | 19.3.5 | cpe:2.3:a:oracle:graalvm:19.3.5:*:*:*:enterprise:*:*:* |
| oracle | graalvm | 20.3.1.2 | cpe:2.3:a:oracle:graalvm:20.3.1.2:*:*:*:enterprise:*:*:* |
| oracle | graalvm | 21.0.0.2 | cpe:2.3:a:oracle:graalvm:21.0.0.2:*:*:*:enterprise:*:*:* |
| oracle | jd_edwards_enterpriseone_tools | < 9.2.6.0 | cpe:2.3:a:oracle:jd_edwards_enterpriseone_tools:*:*:*:*:*:*:*:* |
| oracle | jd_edwards_world_security | a9.4 | cpe:2.3:a:oracle:jd_edwards_world_security:a9.4:*:*:*:*:*:*:* |
| oracle | mysql_connectors | <= 8.0.23 | cpe:2.3:a:oracle:mysql_connectors:*:*:*:*:*:*:*:* |
| oracle | mysql_server | <= 5.7.33 | cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:* |
| oracle | mysql_server | >= 8.0.15, <= 8.0.23 | cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:* |
| oracle | mysql_workbench | <= 8.0.23 | cpe:2.3:a:oracle:mysql_workbench:*:*:*:*:*:*:*:* |
| oracle | peoplesoft_enterprise_peopletools | 8.57 | cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.57:*:*:*:*:*:*:* |
| oracle | peoplesoft_enterprise_peopletools | 8.58 | cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.58:*:*:*:*:*:*:* |
| oracle | peoplesoft_enterprise_peopletools | 8.59 | cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.59:*:*:*:*:*:*:* |
| oracle | primavera_unifier | >= 17.7, <= 17.12 | cpe:2.3:a:oracle:primavera_unifier:*:*:*:*:*:*:*:* |
| oracle | primavera_unifier | 19.12 | cpe:2.3:a:oracle:primavera_unifier:19.12:*:*:*:*:*:*:* |
| oracle | primavera_unifier | 20.12 | cpe:2.3:a:oracle:primavera_unifier:20.12:*:*:*:*:*:*:* |
| oracle | primavera_unifier | 21.12 | cpe:2.3:a:oracle:primavera_unifier:21.12:*:*:*:*:*:*:* |
| oracle | secure_backup | < 18.1.0.1.0 | cpe:2.3:a:oracle:secure_backup:*:*:*:*:*:*:*:* |
| oracle | secure_global_desktop | 5.6 | cpe:2.3:a:oracle:secure_global_desktop:5.6:*:*:*:*:*:*:* |
| oracle | zfs_storage_appliance_kit | 8.8 | cpe:2.3:a:oracle:zfs_storage_appliance_kit:8.8:*:*:*:*:*:*:* |
| sonicwall | sma100_firmware | >= 10.2.0.0, < 10.2.1.0-17sv | cpe:2.3:o:sonicwall:sma100_firmware:*:*:*:*:*:*:*:* |
| sonicwall | capture_client | 3.5 | cpe:2.3:a:sonicwall:capture_client:3.5:*:*:*:*:*:*:* |
| sonicwall | sonicos | 7.0.1.0 | cpe:2.3:o:sonicwall:sonicos:7.0.1.0:*:*:*:*:*:*:* |
| siemens | ruggedcom_rcm1224_firmware | >= 6.2 | cpe:2.3:o:siemens:ruggedcom_rcm1224_firmware:*:*:*:*:*:*:*:* |
| siemens | scalance_lpe9403_firmware | — | cpe:2.3:o:siemens:scalance_lpe9403_firmware:*:*:*:*:*:*:*:* |
| siemens | scalance_m-800_firmware | >= 6.2 | cpe:2.3:o:siemens:scalance_m-800_firmware:*:*:*:*:*:*:*:* |
| siemens | scalance_s602_firmware | >= 4.1 | cpe:2.3:o:siemens:scalance_s602_firmware:*:*:*:*:*:*:*:* |
| siemens | scalance_s612_firmware | >= 4.1 | cpe:2.3:o:siemens:scalance_s612_firmware:*:*:*:*:*:*:*:* |
| siemens | scalance_s615_firmware | >= 6.2 | cpe:2.3:o:siemens:scalance_s615_firmware:*:*:*:*:*:*:*:* |
| siemens | scalance_s623_firmware | >= 4.1 | cpe:2.3:o:siemens:scalance_s623_firmware:*:*:*:*:*:*:*:* |
| siemens | scalance_s627-2m_firmware | >= 4.1 | cpe:2.3:o:siemens:scalance_s627-2m_firmware:*:*:*:*:*:*:*:* |
| siemens | scalance_sc-600_firmware | >= 2.0 | cpe:2.3:o:siemens:scalance_sc-600_firmware:*:*:*:*:*:*:*:* |
| siemens | scalance_w700_firmware | >= 6.5 | cpe:2.3:o:siemens:scalance_w700_firmware:*:*:*:*:*:*:*:* |
| siemens | scalance_w1700_firmware | >= 2.0 | cpe:2.3:o:siemens:scalance_w1700_firmware:*:*:*:*:*:*:*:* |
| siemens | scalance_xb-200_firmware | < 4.3 | cpe:2.3:o:siemens:scalance_xb-200_firmware:*:*:*:*:*:*:*:* |
| siemens | scalance_xc-200_firmware | < 4.3 | cpe:2.3:o:siemens:scalance_xc-200_firmware:*:*:*:*:*:*:*:* |
| siemens | scalance_xf-200ba_firmware | < 4.3 | cpe:2.3:o:siemens:scalance_xf-200ba_firmware:*:*:*:*:*:*:*:* |
| siemens | scalance_xm-400_firmware | < 6.4 | cpe:2.3:o:siemens:scalance_xm-400_firmware:*:*:*:*:*:*:*:* |
| siemens | scalance_xp-200_firmware | < 4.3 | cpe:2.3:o:siemens:scalance_xp-200_firmware:*:*:*:*:*:*:*:* |
| siemens | scalance_xr-300wg_firmware | < 4.3 | cpe:2.3:o:siemens:scalance_xr-300wg_firmware:*:*:*:*:*:*:*:* |
| siemens | scalance_xr524-8c_firmware | < 6.4 | cpe:2.3:o:siemens:scalance_xr524-8c_firmware:*:*:*:*:*:*:*:* |
| siemens | scalance_xr526-8c_firmware | < 6.4 | cpe:2.3:o:siemens:scalance_xr526-8c_firmware:*:*:*:*:*:*:*:* |