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(CVE-2020-35733)
Vulnerability from cleanstart – Published: 2026-09-18 01:22 – Updated: 2026-09-18 11:59 – Source website
Withdrawn 2026-09-18
VLAI
Summary
Erlang/OTP is a set of libraries for the Erlang programming language
Details
Multiple security vulnerabilities affect the erlang package. Erlang/OTP is a set of libraries for the Erlang programming language. See references for individual vulnerability details.
Severity
9.8 (Critical)
References
{
"affected": [
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"name": "erlang"
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"ranges": [
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"id": "CLEANSTART-2026-HG35040",
"modified": "2026-09-18T11:59:01.768079Z",
"published": "2026-09-18T01:22:28.530771Z",
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"severity": [
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"upstream": [
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"withdrawn": "2026-09-18T11:59:01.768079Z"
}
CVE-2020-35733 (GCVE-0-2020-35733)
Vulnerability from cvelistv5 – Published: 2021-01-15 13:35 – Updated: 2024-08-04 17:09
VLAI
EPSS
VEX
Summary
An issue was discovered in Erlang/OTP before 23.2.2. The ssl application 10.2 accepts and trusts an invalid X.509 certificate chain to a trusted root Certification Authority.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://www.erlang.org/news | x_refsource_MISC |
| https://www.erlang.org/downloads | x_refsource_MISC |
| https://github.com/erlang/otp/releases | x_refsource_MISC |
| https://erlang.org/pipermail/erlang-questions/202… | x_refsource_CONFIRM |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
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CVE-2022-37026 (GCVE-0-2022-37026)
Vulnerability from cvelistv5 – Published: 2022-09-21 00:00 – Updated: 2025-05-27 18:19
VLAI
EPSS
VEX
Summary
In Erlang/OTP before 23.3.4.15, 24.x before 24.3.4.2, and 25.x before 25.0.2, there is a Client Authentication Bypass in certain client-certification situations for SSL, TLS, and DTLS.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-05-27 15:29 UTC
Assigner
References
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CVE-2023-48795 (GCVE-0-2023-48795)
Vulnerability from cvelistv5 – Published: 2023-12-18 00:00 – Updated: 2026-07-14 12:16
VLAI
EPSS
VEX
Summary
The SSH transport protocol with certain OpenSSH extensions, found in OpenSSH before 9.6 and other products, allows remote attackers to bypass integrity checks such that some packets are omitted (from the extension negotiation message), and a client and server may consequently end up with a connection for which some security features have been downgraded or disabled, aka a Terrapin attack. This occurs because the SSH Binary Packet Protocol (BPP), implemented by these extensions, mishandles the handshake phase and mishandles use of sequence numbers. For example, there is an effective attack against SSH's use of ChaCha20-Poly1305 (and CBC with Encrypt-then-MAC). The bypass occurs in chacha20-poly1305@openssh.com and (if CBC is used) the -etm@openssh.com MAC algorithms. This also affects Maverick Synergy Java SSH API before 3.1.0-SNAPSHOT, Dropbear through 2022.83, Ssh before 5.1.1 in Erlang/OTP, PuTTY before 0.80, AsyncSSH before 2.14.2, golang.org/x/crypto before 0.17.0, libssh before 0.10.6, libssh2 through 1.11.0, Thorn Tech SFTP Gateway before 3.4.6, Tera Term before 5.1, Paramiko before 3.4.0, jsch before 0.2.15, SFTPGo before 2.5.6, Netgate pfSense Plus through 23.09.1, Netgate pfSense CE through 2.7.2, HPN-SSH through 18.2.0, ProFTPD before 1.3.8b (and before 1.3.9rc2), ORYX CycloneSSH before 2.3.4, NetSarang XShell 7 before Build 0144, CrushFTP before 10.6.0, ConnectBot SSH library before 2.2.22, Apache MINA sshd through 2.11.0, sshj through 0.37.0, TinySSH through 20230101, trilead-ssh2 6401, LANCOM LCOS and LANconfig, FileZilla before 3.66.4, Nova before 11.8, PKIX-SSH before 14.4, SecureCRT before 9.4.3, Transmit5 before 5.10.4, Win32-OpenSSH before 9.5.0.0p1-Beta, WinSCP before 6.2.2, Bitvise SSH Server before 9.32, Bitvise SSH Client before 9.33, KiTTY through 0.76.1.13, the net-ssh gem 7.2.0 for Ruby, the mscdex ssh2 module before 1.15.0 for Node.js, the thrussh library before 0.35.1 for Rust, and the Russh crate before 0.40.2 for Rust.
Severity
5.9 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2023-12-22 05:01 UTC
CWE
- n/a
- CWE-354 - Improper Validation of Integrity Check Value
Assigner
References
139 references
| URL | Tags |
|---|---|
| https://www.chiark.greenend.org.uk/~sgtatham/putt… | |
| https://matt.ucc.asn.au/dropbear/CHANGES | |
| https://github.com/proftpd/proftpd/blob/master/RE… | |
| https://www.netsarang.com/en/xshell-update-history/ | |
| https://www.paramiko.org/changelog.html | |
| https://www.openssh.com/openbsd.html | |
| https://github.com/openssh/openssh-portable/commi… | |
| https://groups.google.com/g/golang-announce/c/-n5… | |
| https://www.bitvise.com/ssh-server-version-history | |
| https://github.com/ronf/asyncssh/tags | |
| https://gitlab.com/libssh/libssh-mirror/-/tags | |
| https://www.reddit.com/r/sysadmin/comments/18idv5… | |
| https://github.com/erlang/otp/blob/d1b43dc0f1361d… | |
| https://www.openssh.com/txt/release-9.6 | |
| https://jadaptive.com/important-java-ssh-security… | |
| https://www.terrapin-attack.com | |
| https://github.com/mkj/dropbear/blob/17657c36cce6… | |
| https://github.com/ronf/asyncssh/blob/develop/doc… | |
| https://thorntech.com/cve-2023-48795-and-sftp-gateway/ | |
| https://github.com/warp-tech/russh/releases/tag/v0.40.2 | |
| https://github.com/TeraTermProject/teraterm/commi… | |
| https://www.openwall.com/lists/oss-security/2023/… | |
| https://twitter.com/TrueSkrillor/status/173677438… | |
| https://github.com/golang/crypto/commit/9d2ee975e… | |
| https://github.com/paramiko/paramiko/issues/2337 | |
| https://groups.google.com/g/golang-announce/c/qA3… | |
| https://news.ycombinator.com/item?id=38684904 | |
| https://news.ycombinator.com/item?id=38685286 | |
| http://www.openwall.com/lists/oss-security/2023/12/18/3 | mailing-list |
| https://github.com/mwiede/jsch/issues/457 | |
| https://git.libssh.org/projects/libssh.git/commit… | |
| https://github.com/erlang/otp/releases/tag/OTP-26.2.1 | |
| https://github.com/advisories/GHSA-45x7-px36-x8w8 | |
| https://security-tracker.debian.org/tracker/sourc… | |
| https://security-tracker.debian.org/tracker/sourc… | |
| https://security-tracker.debian.org/tracker/CVE-2… | |
| https://bugzilla.suse.com/show_bug.cgi?id=1217950 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=2254210 | |
| https://bugs.gentoo.org/920280 | |
| https://ubuntu.com/security/CVE-2023-48795 | |
| https://www.suse.com/c/suse-addresses-the-ssh-v2-… | |
| https://access.redhat.com/security/cve/cve-2023-48795 | |
| https://github.com/mwiede/jsch/pull/461 | |
| https://github.com/drakkan/sftpgo/releases/tag/v2.5.6 | |
| https://github.com/libssh2/libssh2/pull/1291 | |
| https://forum.netgate.com/topic/184941/terrapin-s… | |
| https://github.com/jtesta/ssh-audit/commit/8e972c… | |
| https://github.com/rapier1/hpn-ssh/releases | |
| https://github.com/proftpd/proftpd/issues/456 | |
| https://github.com/TeraTermProject/teraterm/relea… | |
| https://github.com/mwiede/jsch/compare/jsch-0.2.1… | |
| https://oryx-embedded.com/download/#changelog | |
| https://www.crushftp.com/crush10wiki/Wiki.jsp?pag… | |
| https://github.com/connectbot/sshlib/compare/2.2.… | |
| https://github.com/connectbot/sshlib/commit/5c8b5… | |
| https://github.com/mscdex/ssh2/commit/97b223f8891… | |
| https://nest.pijul.com/pijul/thrussh/changes/D6H7… | |
| https://crates.io/crates/thrussh/versions | |
| https://github.com/NixOS/nixpkgs/pull/275249 | |
| http://www.openwall.com/lists/oss-security/2023/12/19/5 | mailing-list |
| https://www.freebsd.org/security/advisories/FreeB… | |
| https://arstechnica.com/security/2023/12/hackers-… | |
| http://www.openwall.com/lists/oss-security/2023/12/20/3 | mailing-list |
| http://packetstormsecurity.com/files/176280/Terra… | |
| https://github.com/proftpd/proftpd/blob/d21e7a2e4… | |
| https://github.com/proftpd/proftpd/blob/0a7ea9b0b… | |
| https://github.com/apache/mina-sshd/issues/445 | |
| https://github.com/hierynomus/sshj/issues/916 | |
| https://github.com/janmojzis/tinyssh/issues/81 | |
| https://www.openwall.com/lists/oss-security/2023/… | |
| https://security-tracker.debian.org/tracker/sourc… | |
| https://github.com/net-ssh/net-ssh/blob/2e65064a5… | |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://www.debian.org/security/2023/dsa-5586 | vendor-advisory |
| https://www.lancom-systems.de/service-support/all… | |
| https://www.theregister.com/2023/12/20/terrapin_a… | |
| https://filezilla-project.org/versions.php | |
| https://nova.app/releases/#v11.8 | |
| https://roumenpetrov.info/secsh/#news20231220 | |
| https://www.vandyke.com/products/securecrt/history.txt | |
| https://help.panic.com/releasenotes/transmit5/ | |
| https://github.com/PowerShell/Win32-OpenSSH/relea… | |
| https://github.com/PowerShell/Win32-OpenSSH/issues/2189 | |
| https://winscp.net/eng/docs/history#6.2.2 | |
| https://www.bitvise.com/ssh-client-version-history#933 | |
| https://github.com/cyd01/KiTTY/issues/520 | |
| https://www.debian.org/security/2023/dsa-5588 | vendor-advisory |
| https://github.com/ssh-mitm/ssh-mitm/issues/165 | |
| https://news.ycombinator.com/item?id=38732005 | |
| https://lists.debian.org/debian-lts-announce/2023… | mailing-list |
| https://security.gentoo.org/glsa/202312-16 | vendor-advisory |
| https://security.gentoo.org/glsa/202312-17 | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://security.netapp.com/advisory/ntap-2024010… | |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://psirt.global.sonicwall.com/vuln-detail/SN… | |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.debian.org/debian-lts-announce/2024… | mailing-list |
| https://lists.debian.org/debian-lts-announce/2024… | mailing-list |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://support.apple.com/kb/HT214084 | |
| http://seclists.org/fulldisclosure/2024/Mar/21 | mailing-list |
| https://lists.debian.org/debian-lts-announce/2024… | mailing-list |
| http://www.openwall.com/lists/oss-security/2024/04/17/8 | mailing-list |
| http://www.openwall.com/lists/oss-security/2024/03/06/3 | mailing-list |
| https://www.vicarius.io/vsociety/posts/cve-2023-4… | |
| https://www.vicarius.io/vsociety/posts/cve-2023-4… | |
| https://lists.debian.org/debian-lts-announce/2025… | |
| https://lists.debian.org/debian-lts-announce/2024… | |
| https://lists.debian.org/debian-lts-announce/2024… | |
| https://lists.fedoraproject.org/archives/list/pac… | |
| https://lists.fedoraproject.org/archives/list/pac… | |
| https://lists.fedoraproject.org/archives/list/pac… | |
| https://lists.fedoraproject.org/archives/list/pac… | |
| https://lists.fedoraproject.org/archives/list/pac… | |
| https://lists.fedoraproject.org/archives/list/pac… | |
| https://lists.fedoraproject.org/archives/list/pac… | |
| https://lists.fedoraproject.org/archives/list/pac… | |
| https://lists.fedoraproject.org/archives/list/pac… | |
| https://lists.fedoraproject.org/archives/list/pac… | |
| https://lists.fedoraproject.org/archives/list/pac… | |
| https://cert-portal.siemens.com/productcert/html/… | |
| https://cert-portal.siemens.com/productcert/html/… | |
| https://cert-portal.siemens.com/productcert/html/… | |
| https://cert-portal.siemens.com/productcert/html/… | |
| https://cert-portal.siemens.com/productcert/html/… |
Impacted products
4 products
| Vendor | Product | Version | |
|---|---|---|---|
| Siemens | RUGGEDCOM APE1808 |
Affected:
0 , < *
(custom)
|
|
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.5 , < *
(custom)
|
|
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP |
Affected:
V3.1.5 , < *
(custom)
|
|
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.5 , < *
(custom)
|
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{
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},
{
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},
{
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},
{
"url": "https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2024-0002"
},
{
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},
{
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},
{
"url": "https://support.apple.com/kb/HT214084"
},
{
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"tags": [
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"url": "http://seclists.org/fulldisclosure/2024/Mar/21"
},
{
"name": "[debian-lts-announce] 20240425 [SECURITY] [DLA 3794-1] putty security update",
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},
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{
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CVE-2025-32433 (GCVE-0-2025-32433)
Vulnerability from cvelistv5 – Published: 2025-04-16 21:34 – Updated: 2026-02-26 18:28
VLAI
EPSS
VEX
Title
Erlang/OTP SSH Vulnerable to Pre-Authentication RCE
Summary
Erlang/OTP is a set of libraries for the Erlang programming language. Prior to versions OTP-27.3.3, OTP-26.2.5.11, and OTP-25.3.2.20, a SSH server may allow an attacker to perform unauthenticated remote code execution (RCE). By exploiting a flaw in SSH protocol message handling, a malicious actor could gain unauthorized access to affected systems and execute arbitrary commands without valid credentials. This issue is patched in versions OTP-27.3.3, OTP-26.2.5.11, and OTP-25.3.2.20. A temporary workaround involves disabling the SSH server or to prevent access via firewall rules.
Severity
10 (Critical)
SSVC
Exploitation: active
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-08-20 03:55 UTC
CWE
- CWE-306 - Missing Authentication for Critical Function
Assigner
References
14 references
| URL | Tags |
|---|---|
| https://github.com/erlang/otp/security/advisories… | x_refsource_CONFIRM |
| https://github.com/erlang/otp/commit/0fcd9c56524b… | x_refsource_MISC |
| https://github.com/erlang/otp/commit/6eef04130afc… | x_refsource_MISC |
| https://github.com/erlang/otp/commit/b1924d37fd83… | x_refsource_MISC |
| http://www.openwall.com/lists/oss-security/2025/04/16/2 | |
| http://www.openwall.com/lists/oss-security/2025/04/18/1 | |
| http://www.openwall.com/lists/oss-security/2025/04/18/2 | |
| http://www.openwall.com/lists/oss-security/2025/04/18/6 | |
| http://www.openwall.com/lists/oss-security/2025/04/19/1 | |
| https://security.netapp.com/advisory/ntap-2025042… | |
| https://lists.debian.org/debian-lts-announce/2025… | |
| https://github.com/ProDefense/CVE-2025-32433/blob… | exploit |
| https://sec.cloudapps.cisco.com/security/center/c… | vendor-advisory |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
Impacted products
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CVE-2025-46712 (GCVE-0-2025-46712)
Vulnerability from cvelistv5 – Published: 2025-05-08 19:26 – Updated: 2026-01-12 14:40
VLAI
EPSS
VEX
Title
Erlang/OTP SSH Has Strict KEX Violations
Summary
Erlang/OTP is a set of libraries for the Erlang programming language. In versions prior to OTP-27.3.4 (for OTP-27), OTP-26.2.5.12 (for OTP-26), and OTP-25.3.2.21 (for OTP-25), Erlang/OTP SSH fails to enforce strict KEX handshake hardening measures by allowing optional messages to be exchanged. This allows a Man-in-the-Middle attacker to inject these messages in a connection during the handshake. This issue has been patched in versions OTP-27.3.4 (for OTP-27), OTP-26.2.5.12 (for OTP-26), and OTP-25.3.2.21 (for OTP-25).
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-05-08 20:02 UTC
CWE
- CWE-440 - Expected Behavior Violation
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/erlang/otp/security/advisories… | x_refsource_CONFIRM |
| https://github.com/erlang/otp/commit/e4b56a9f4a51… | x_refsource_MISC |
| https://github.com/erlang/otp/releases/tag/OTP-25… | x_refsource_MISC |
| https://github.com/erlang/otp/releases/tag/OTP-26… | x_refsource_MISC |
| https://github.com/erlang/otp/releases/tag/OTP-27.3.4 | x_refsource_MISC |
Impacted products
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},
{
"name": "https://github.com/erlang/otp/releases/tag/OTP-25.3.2.21",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/erlang/otp/releases/tag/OTP-25.3.2.21"
},
{
"name": "https://github.com/erlang/otp/releases/tag/OTP-26.2.5.12",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/erlang/otp/releases/tag/OTP-26.2.5.12"
},
{
"name": "https://github.com/erlang/otp/releases/tag/OTP-27.3.4",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/erlang/otp/releases/tag/OTP-27.3.4"
}
],
"source": {
"advisory": "GHSA-934x-xq38-hhqf",
"discovery": "UNKNOWN"
},
"title": "Erlang/OTP SSH Has Strict KEX Violations"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2025-46712",
"datePublished": "2025-05-08T19:26:27.563Z",
"dateReserved": "2025-04-28T20:56:09.082Z",
"dateUpdated": "2026-01-12T14:40:27.446Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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Trend slope:
-
(linear fit over daily sighting counts)
Show additional events:
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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