CVE-2019-19777
CVE-2019-19777 is a high-severity vulnerability in Nothings Stb Image.h with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-125.
Key facts
- Severity: High (CVSS 3.x base score 8.8)
- CVSS v2: 6.8
- EPSS exploit prediction: 1% (69th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-125
- Affected product: Nothings Stb Image.h
- Published:
- Last modified:
Description
stb_image.h (aka the stb image loader) 2.23, as used in libsixel and other products, has a heap-based buffer over-read in stbi__load_main.
Frequently asked questions
- What is CVE-2019-19777?
- stb_image.h (aka the stb image loader) 2.23, as used in libsixel and other products, has a heap-based buffer over-read in stbi__load_main.
- How severe is CVE-2019-19777?
- CVE-2019-19777 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2019-19777 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2019-19777?
- CVE-2019-19777 primarily affects Nothings Stb Image.h. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2019-19777?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2019-19777 published?
- CVE-2019-19777 was published on 2019-12-13 and last updated on 2026-06-17.
References
Affected products (2)
- cpe:2.3:a:nothings:stb_image.h:2.23:*:*:*:*:*:*:*
- cpe:2.3:a:saitoha:libsixel:1.8.2:*:*:*:*:*:*:*
More vulnerabilities in Nothings Stb Image.h
- CVE-2022-28042 — High (CVSS 8.8): stb_image.h v2.27 was discovered to contain an heap-based use-after-free via the function stbi__jpeg_huff_decode.
- CVE-2018-16981 — High (CVSS 8.8): stb stb_image.h 2.19, as used in catimg, Emscripten, and other products, has a heap-based buffer overflow in the…
- CVE-2023-45666 — High (CVSS 7.3): stb_image is a single file MIT licensed library for processing images. It may look like `stbi__load_gif_main`…
- CVE-2023-45664 — High (CVSS 7.3): stb_image is a single file MIT licensed library for processing images. A crafted image file can trigger…
- CVE-2021-42716 — High (CVSS 7.1): An issue was discovered in stb stb_image.h 2.27. The PNM loader incorrectly interpreted 16-bit PGM files as 8-bit when…
- CVE-2023-43281 — Medium (CVSS 6.5): Double Free vulnerability in Nothings Stb Image.h v.2.28 allows a remote attacker to cause a denial of service via a…
All CVEs affecting Nothings Stb Image.h →
Other CWE-125 (Out-of-bounds Read) vulnerabilities
- CVE-2026-24826 — Critical (CVSS 10.0): Out-of-bounds Write, Divide By Zero, NULL Pointer Dereference, Use of Uninitialized Resource, Out-of-bounds Read,…
- CVE-2024-22004 — Critical (CVSS 10.0): Due to length check, an attacker with privilege access on a Linux Nonsecure operating system can trigger a…
- CVE-2021-41556 — Critical (CVSS 10.0): sqclass.cpp in Squirrel through 2.2.5 and 3.x through 3.1 allows an out-of-bounds read (in the core interpreter) that…
- CVE-2021-21777 — Critical (CVSS 10.0): An information disclosure vulnerability exists in the Ethernet/IP UDP handler functionality of EIP Stack Group OpENer…
- CVE-2017-14451 — Critical (CVSS 10.0): An exploitable out-of-bounds read vulnerability exists in libevm (Ethereum Virtual Machine) of CPP-Ethereum. A…
- CVE-2013-0767 — Critical (CVSS 10.0): The nsSVGPathElement::GetPathLengthScale function in Mozilla Firefox before 18.0, Firefox ESR 10.x before 10.0.12 and…