CVE-2026-54876
Client-Side Memory Leak in OCSP Response Checking
02 Description
Client-Side Memory Leak in OCSP Response Checking
03 Exploitation and scoring
- Exploitation
- Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
- SSVC decision
- ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
- AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
- Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
- EPSS probability
- 0.52% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 44.1% of scored records. A rank, not a probability.
- NVD base score
- 7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- NVD analysis status
- Awaiting Analysis. NVD last modified this record on 2026-08-28.
- Red Hat severity
- Important. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2026-08-05 13:59Z2 MO AGO
- Last updated
- 2026-08-05 19:31Z2 MO AGO
- Reserved
- 2026-06-16
- Assigning CNA
- openssl
- Record state
- PUBLISHED
- Severity
- High (CVSS 7.5)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weaknesses
- Data version
- 5.2
- Document digest
- 7fda9f412c6a1116bba121b66ed0e2ec8ba877fe05858ac5feaf22e8ac67ec3c
05 Affected products
06 References
- openssl-library.orgOpenSSL Advisoryhttps://openssl-library.org/news/secadv/20260805.txt
- github.com4.0.2 git commithttps://github.com/openssl/openssl/commit/d8c51048ac037a21bae0f41cad7a3920dc7f3638
- github.com3.6.4 git commithttps://github.com/openssl/openssl/commit/155b5fe0f93365e6df1c56ee3606b121080c6c12
- www.openwall.comhttp://www.openwall.com/lists/oss-security/2026/08/05/8
07 Fixed in
Debian 14
- openssl Fixed in 3.6.4-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 16.04 LTS
- nodejs No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 18.04 LTS
- nodejs No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.