The _asn1_extract_der_octet function in lib/decoding.c in GNU Libtasn1 before 4.5 allows remote attackers to cause a denial of service (out-of-bounds heap read) via a crafted certificate.
Conclusion & alert: CVE-2015-3622 is rated High Exploit Risk (65.4/100): CVSS Medium severity, with high exploitation likelihood (EPSS 6.06%, 90th percentile). Core evidence: 2 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +1.61% over the last day, indicating growing attacker interest. Mandatory action: 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.
| EDB-ID | Source | Kind | Published | Link |
|---|---|---|---|---|
| — | nvd_ref | exploit_tag | Exploit-DB ↗ | |
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
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 | 2025-05-11 | 4.45% | 6.06% | +1.61% |
| 2 | 2025-03-30 | 5.58% | 4.45% | -1.12% |
| 3 | 2025-03-29 | — | 5.58% | — |
Full EPSS history (9 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 4.3 | 2.0 | MEDIUM |
|
8.6 | 2.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2015-3622 not yet assigned priority: Debian including 1 source packages (libtasn1-6), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2015-3622 |
gentoo
|
normal | CVE-2015-3622: 1 GLSA(s) (201509-04), 1 atom(s) (dev-libs/libtasn1); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2015-3622 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2015-3622 |
suse
|
low | CVE-2015-3622 severity low: SUSE including 326 source package names (amazon/suse-sles-15-sp1-chost-byos-v20210304-hvm-ssd-x86_64, amazon/suse-sles-15-sp1-chost-byos-v20220127-hvm-ssd-x86_64, …), 507 product×package rows across 72 product lines (HPE Helion OpenStack 8, SUSE Liberty Linux 7, … (72 product lines)): Fixed 293, Known Affected 157, Known Not Affected 57. | https://www.suse.com/security/cve/CVE-2015-3622/ |
ubuntu
|
medium | CVE-2015-3622 medium priority: Ubuntu including 2 source packages (libtasn1-3, libtasn1-6), 10 status rows across 5 suites (precise, trusty, upstream, utopic, vivid): released 5, DNE 4, needs-triage 1. | https://ubuntu.com/security/CVE-2015-3622 |