The (1) TLS and (2) DTLS implementations in OpenSSL 1.0.1 before 1.0.1g do not properly handle Heartbeat Extension packets, which allows rem
The (1) TLS and (2) DTLS implementations in OpenSSL 1.0.1 before 1.0.1g do not properly handle Heartbeat Extension packets, which allows remote attackers to obtain sensitive information from process memory via crafted packets that trigger a buffer over-read, as demonstrated by reading private keys, related to d1_both.c and t1_lib.c, aka the Heartbleed bug.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for help- Published
- Apr 7, 2014
- Updated
- Jun 16, 2026
- EPSS
- 100.0% · 100th percentile
- CWE
- CWE-125
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Report tools
Action score
90
Now
Patch today or shut off access.
- CVSS
- 30 / 40 · 7.5 / 10
- CISA KEV
- 30 / 30 · Listed
- EPSS
- 30 / 30 · 100.0%
CISA SSVC decision
- Exploitation
- active
- Automatable
- yes
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
Actively exploited in the wild
CISA added this to its Known Exploited Vulnerabilities catalog on May 4, 2022. That signals real attacks, not theory.
Remediation deadline for government agencies: May 25, 2022.
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| openssl | openssl | cpe:2.3:a:openssl:openssl |
| filezilla-project | filezilla server | cpe:2.3:a:filezilla-project:filezilla_server |
| siemens | application processing engine firmware | cpe:2.3:o:siemens:application_processing_engine_firmware |
| siemens | application processing engine | cpe:2.3:h:siemens:application_processing_engine |
| siemens | cp 1543-1 firmware | cpe:2.3:o:siemens:cp_1543-1_firmware |
| siemens | cp 1543-1 | cpe:2.3:h:siemens:cp_1543-1 |
| siemens | simatic s7-1500 firmware | cpe:2.3:o:siemens:simatic_s7-1500_firmware |
| siemens | simatic s7-1500 | cpe:2.3:h:siemens:simatic_s7-1500 |
| siemens | simatic s7-1500t firmware | cpe:2.3:o:siemens:simatic_s7-1500t_firmware |
| siemens | simatic s7-1500t | cpe:2.3:h:siemens:simatic_s7-1500t |
| siemens | elan-8.2 | cpe:2.3:a:siemens:elan-8.2 |
| siemens | wincc open architecture | cpe:2.3:a:siemens:wincc_open_architecture |
and 23 more
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- broadcom symantec messaging gateway10.6.0
- broadcom symantec messaging gateway10.6.1
- canonical ubuntu linux12.04
- canonical ubuntu linux12.10
- canonical ubuntu linux13.10
- debian debian linux6.0
- debian debian linux7.0
- debian debian linux8.0
- fedoraproject fedora19
- fedoraproject fedora20
- filezilla-project filezilla serverbefore 0.9.44
- intellian v100 firmware1.20
- intellian v100 firmware1.21
- intellian v100 firmware1.24
- intellian v60 firmware1.15
- intellian v60 firmware1.25
- mitel micollab6.0
- mitel micollab7.0
- mitel micollab7.1
- mitel micollab7.2
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | openssl | before 1.0.1g-1 | 1.0.1g-1 |
| Debian:7 | openssl | before 1.0.1e-2+deb7u5 | 1.0.1e-2+deb7u5 |
| openSUSE:Tumbleweed | httrack | before 3.48.22-1.3 | 3.48.22-1.3 |
| openSUSE:Tumbleweed | stunnel | before 5.38-1.1 | 5.38-1.1 |
| openSUSE:Tumbleweed | tor | before 0.2.8.11-1.1 | 0.2.8.11-1.1 |
| Red Hat:enterprise_linux:6::client | openssl | before 0:1.0.1e-16.el6_5.7 | 0:1.0.1e-16.el6_5.7 |
| Red Hat:enterprise_linux:6::client | openssl-debuginfo | before 0:1.0.1e-16.el6_5.7 | 0:1.0.1e-16.el6_5.7 |
| Red Hat:enterprise_linux:6::client | openssl-devel | before 0:1.0.1e-16.el6_5.7 | 0:1.0.1e-16.el6_5.7 |
| Red Hat:enterprise_linux:6::client | openssl-perl | before 0:1.0.1e-16.el6_5.7 | 0:1.0.1e-16.el6_5.7 |
| Red Hat:enterprise_linux:6::client | openssl-static | before 0:1.0.1e-16.el6_5.7 | 0:1.0.1e-16.el6_5.7 |
| Red Hat:enterprise_linux:6::hypervisor | rhev-hypervisor6 | before 0:6.5-20140407.0.el6ev | 0:6.5-20140407.0.el6ev |
| Red Hat:enterprise_linux:6::hypervisor | rhev-hypervisor6 | before 0:6.5-20140118.1.3.2.el6_5 | 0:6.5-20140118.1.3.2.el6_5 |
| Red Hat:rhev_manager:3 | rhevm-spice-client | before 0:3.3-12.el6_5 | 0:3.3-12.el6_5 |
| Red Hat:rhev_manager:3 | rhevm-spice-client-x64-cab | before 0:3.3-12.el6_5 | 0:3.3-12.el6_5 |
| Red Hat:rhev_manager:3 | rhevm-spice-client-x64-msi | before 0:3.3-12.el6_5 | 0:3.3-12.el6_5 |
| Red Hat:rhev_manager:3 | rhevm-spice-client-x86-cab | before 0:3.3-12.el6_5 | 0:3.3-12.el6_5 |
| Red Hat:rhev_manager:3 | rhevm-spice-client-x86-msi | before 0:3.3-12.el6_5 | 0:3.3-12.el6_5 |
Same product
openssl: all recordsOther highest-scoring records for the same primary product.
- CVE-2021-3711SM2 Decryption Buffer Overflow65This week
- CVE-2003-0545Double free vulnerability in OpenSSL 0.9.7 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code 65This week
- CVE-2016-2108The ASN.1 implementation in OpenSSL before 1.0.1o and 1.0.2 before 1.0.2c allows remote attackers to execute arbitrary code or cause a denia62This week
- CVE-2016-6309statem/statem.c in OpenSSL 1.1.0a does not consider memory-block movement after a realloc call, which allows remote attackers to cause a den60This week
- CVE-2022-3786X.509 Email Address Variable Length Buffer Overflow58Plan
- CVE-2022-2068The c_rehash script allows command injection58Plan
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| debian:openssl | 1.0.1g-1 · Debian:12 | Package registry (OSV) |
| opensuse:httrack | 3.48.22-1.3 · openSUSE:Tumbleweed | Package registry (OSV) |
| opensuse:stunnel | 5.38-1.1 · openSUSE:Tumbleweed | Package registry (OSV) |
| opensuse:tor | 0.2.8.11-1.1 · openSUSE:Tumbleweed | Package registry (OSV) |
| red hat:openssl | 0:1.0.1e-16.el6_5.7 · Red Hat:enterprise_linux:6::client | Package registry (OSV) |
| red hat:openssl-debuginfo | 0:1.0.1e-16.el6_5.7 · Red Hat:enterprise_linux:6::client | Package registry (OSV) |
| red hat:openssl-devel | 0:1.0.1e-16.el6_5.7 · Red Hat:enterprise_linux:6::client | Package registry (OSV) |
| red hat:openssl-perl | 0:1.0.1e-16.el6_5.7 · Red Hat:enterprise_linux:6::client | Package registry (OSV) |
| red hat:openssl-static | 0:1.0.1e-16.el6_5.7 · Red Hat:enterprise_linux:6::client | Package registry (OSV) |
| red hat:rhev-hypervisor6 | 0:6.5-20140407.0.el6ev · Red Hat:enterprise_linux:6::hypervisor | Package registry (OSV) |
| red hat:rhevm-spice-client | 0:3.3-12.el6_5 · Red Hat:rhev_manager:3 | Package registry (OSV) |
| red hat:rhevm-spice-client-x64-cab | 0:3.3-12.el6_5 · Red Hat:rhev_manager:3 | Package registry (OSV) |
| red hat:rhevm-spice-client-x64-msi | 0:3.3-12.el6_5 · Red Hat:rhev_manager:3 | Package registry (OSV) |
| red hat:rhevm-spice-client-x86-cab | 0:3.3-12.el6_5 · Red Hat:rhev_manager:3 | Package registry (OSV) |
| red hat:rhevm-spice-client-x86-msi | 0:3.3-12.el6_5 · Red Hat:rhev_manager:3 | Package registry (OSV) |
Exploit status
Weaponized
A ready exploit tool or active in-the-wild use is known for this vulnerability. This should be your top priority.
Evidence
- Metasploit module ×2
- Exploit-DB entry ×4
- Nuclei detection template ×1
- Proof-of-concept repository on GitHub ×50
Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.
| Source | Kind | Date |
|---|---|---|
| Exploit-DB entry | remote | 2014-04-09 |
| Exploit-DB entry | remote | 2014-04-10 |
| Exploit-DB entry | remote | 2014-04-24 |
| Exploit-DB entry | remote | 2014-04-08 |
| Metasploit module | auxiliary/scanner/ssl/openssl_heartbleedOpenSSL Heartbeat (Heartbleed) Information Leakauxiliary | 2014-04-07 |
| Metasploit module | auxiliary/server/openssl_heartbeat_client_memoryOpenSSL Heartbeat (Heartbleed) Client Memory Exposureauxiliary | 2014-04-07 |
| Nuclei detection template | Nuclei template CVE-2014-0160 | — |
| Proof-of-concept repository on GitHub | stars:2379 | 2014-04-07 |
| Proof-of-concept repository on GitHub | stars:452 | 2014-04-08 |
| Proof-of-concept repository on GitHub | stars:7 | 2014-04-08 |
| Proof-of-concept repository on GitHub | stars:2 | 2014-04-08 |
| Proof-of-concept repository on GitHub | stars:19 | 2014-04-08 |
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
- First PoC-1 d
- Metasploit-1 d
- Published
- CISA KEV+2948 d
- TodaySep 30, 2026+4559 d
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- none
- Availability
- none
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- None
- Availability impact
- None
Weakness class (CWE)
CWE-125 · Out-of-bounds ReadCVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
ATT&CK techniques
—
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- advisories.mageia.org/MGASA-2014-0165.html
- blog.fox-it.com/2014/04/08/openssl-heartbleed-bug-live-blog/
- cogentdatahub.com/ReleaseNotes.html
- download.schneider-electric.com/files?p_Doc_Ref=SEVD%202014-119-01
- git.openssl.org/gitweb/?p=openssl.git%3Ba=commit%3Bh=96db9023b881d7cd9f379b0c154650d6c108e9a3
- heartbleed.com/
- lists.fedoraproject.org/pipermail/package-announce/2014-April/131221.html
- lists.fedoraproject.org/pipermail/package-announce/2014-April/131291.html
- lists.fedoraproject.org/pipermail/package-announce/2014-August/136473.html
- lists.opensuse.org/opensuse-security-announce/2014-04/msg00004.html
- lists.opensuse.org/opensuse-security-announce/2014-04/msg00005.html
- lists.opensuse.org/opensuse-updates/2014-04/msg00061.html
- marc.info/?l=bugtraq&m=139722163017074&w=2
- marc.info/?l=bugtraq&m=139757726426985&w=2
- marc.info/?l=bugtraq&m=139757819327350&w=2
- marc.info/?l=bugtraq&m=139757919027752&w=2
- marc.info/?l=bugtraq&m=139758572430452&w=2
- marc.info/?l=bugtraq&m=139765756720506&w=2
- marc.info/?l=bugtraq&m=139774054614965&w=2
- marc.info/?l=bugtraq&m=139774703817488&w=2
Vendor advisories and official records. Exploit/PoC links are deliberately left out.